How do the wavelengths of ultraviolet light compare to those of visible light, infrared waves or radio waves? Ultraviolet light exhibits

How Do The Wavelengths Of Ultraviolet Light Compare To Those Of Visible Light, Infrared Waves Or Radio

Answers

Answer 1

Ultraviolet light exhibits shorter wavelengths compared to visible light, infrared waves, or radio waves.

A wavelength is a measure of the distance between two corresponding points on a wave. Ultraviolet light is a type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays. Visible light is the portion of the electromagnetic spectrum that is visible to the human eye and has wavelengths between approximately 400 and 700 nanometers. Infrared waves are longer than visible light and have wavelengths between approximately 700 nanometers and 1 millimeter. Radio waves have the longest wavelengths in the electromagnetic spectrum, ranging from about 1 millimeter to more than 100 kilometers.

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye. It ranges in wavelength from approximately 400 to 700 nanometers and is responsible for the colors we see in the world around us. When white light passes through a prism or water droplets, it is separated into the various colors of the visible spectrum: red, orange, yellow, green, blue, indigo, and violet.

Therefore, Compared to radio waves, infrared waves, or visible light, ultraviolet light has shorter wavelengths.

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Related Questions

10. In a common type of mass spectrometer, a beam of ions is passed through a velocity sector


with crossed electric and magnetic fields. What is the purpose of the velocity sector?


O to block all ions except those with specific speeds


to decrease the kinetic energy of the ions


O to prevent the ions from traveling in a circular path


O to strip loose electrons from the ions

Answers

The purpose of the velocity sector in a common type of mass spectrometer with crossed electric and magnetic fields is to block all ions except those with specific speeds.

In a mass spectrometer, the velocity sector plays a crucial role in separating and analyzing ions based on their mass-to-charge ratios. When a beam of ions passes through the velocity sector, the crossed electric and magnetic fields work together to filter out ions with specific speeds. This selection process ensures that only ions with desired characteristics proceed to the detector, providing a more accurate and precise analysis of the sample. The other functions mentioned, such as decreasing the kinetic energy of the ions, preventing ions from traveling in a circular path, or stripping loose electrons from the ions, are not the primary purpose of the velocity sector in this type of mass spectrometer.

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A spring gun with a spring constant of 250N/m is compressed 5. Ocm. How fast


will a 0. 025kg dart move when it leaves the gun?



0. 13 m/s


0. 50 m/s


1. 5 m/s


5. 0 m/s

Answers

The dart will move at velocity approximately 5.0 m/s when it leaves the gun.

To calculate the speed of the dart, we can use the conservation of energy principle. When the spring is compressed, it has potential energy, which is converted into the kinetic energy of the dart when it is released. The potential energy of the compressed spring can be calculated using the formula: PE = 0.5 * k * x^2, where PE is the potential energy, k is the spring constant (250 N/m), and x is the compression distance (0.05 m).

PE = 0.5 * 250 * (0.05)^2 = 0.3125 J (joules)

Now, we can use the kinetic energy formula to find the speed of the dart: KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass of the dart (0.025 kg), and v is the speed. We can rearrange this formula to solve for v:

v = sqrt((2 * KE) / m)

Plugging in the values, we get:

v = sqrt((2 * 0.3125) / 0.025) ≈ 5.0 m/s

Therefore, the speed of the dart when it leaves the gun is approximately 5.0 m/s.

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What is the electric field at a point 0. 200 m to the right of a + charge ? Include sign to indicate the direction of the field. 1. 50^ * 10^ "-8" C a + or - ( Unit = N / C ) =




Help please

Answers

The answer is:

To calculate the electric field at a point due to a point charge, we can use the formula:

[tex]E = k * q / r^2[/tex]

where E is the electric field, k is the Coulomb constant, q is the charge of the point charge, and r is the distance from the point charge to the point where we want to find the electric field.

In this case, we have a + charge of q =[tex]1.50 * 10^{-8} C[/tex] and we want to find the electric field at a point 0.200 m to the right of the charge. Therefore, the distance r = 0.200 m.

Plugging in the values, we get:

E = [tex](9 * 10^9 N*m^2/C^2) * (1.50 * 10^{-8} C) / (0.200 m)^2[/tex]

E = [tex]1.69 * 10^5 N/C[/tex]

The electric field is directed away from the + charge, so we include a + sign to indicate the direction of the field.

[tex]1.69 *10^5 N/C[/tex] to the right (+)

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Which force acts on falling objects to oppose gravity?

Answers

The force that acts on falling objects to oppose gravity is air resistance, also known as drag.

Air resistance is a type of frictional force that occurs when an object moves through a fluid, such as air or water. As a falling object accelerates due to gravity, it also encounters resistance from the air molecules it pushes against. This resistance increases with the object's speed, making it harder for the object to continue accelerating at the same rate.

Air resistance plays a crucial role in determining the terminal velocity of a falling object. Terminal velocity is the constant speed that an object reaches when the downward force of gravity is exactly balanced by the upward force of air resistance. At this point, the object no longer accelerates and maintains a steady speed until it comes into contact with the ground or another surface.

Various factors affect the air resistance acting on a falling object, including the object's size, shape, and surface area. Objects with larger surface areas and irregular shapes experience more air resistance, slowing their descent compared to smaller, more streamlined objects. In some cases, air resistance can be minimized by designing objects with specific shapes, such as the aerodynamic design of airplanes, cars, and sports equipment.

In summary, air resistance is the force that opposes gravity on falling objects, influencing their terminal velocity and overall motion through the air. This force is affected by factors such as the object's size, shape, and surface area, and plays a critical role in various applications, including engineering and sports.

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A trumpet plays its 3rd harmonic at 510 Hz. It then opens a valve, which adds 0. 110 m to its length. What is the new 3rd harmonic frequency? (Hint: Find the original length. ) (Speed of sound = 343 m/s) (Unit = Hz)​

Answers

The new 3rd harmonic frequency is 869 Hz. The 3rd harmonic means that the trumpet has three nodes and two antinodes, and the standing wave has three segments.

The frequency of the 3rd harmonic can be found by multiplying the fundamental frequency by 3, so the original length of the trumpet must be such that the 3rd harmonic frequency is 510 Hz.

Using the formula for the wavelength of a standing wave, λ = 2L/n, where L is the length of the trumpet and n is the harmonic number, we can find the original length to be L = (2λ/3). Substituting λ = v/f, where v is the speed of sound and f is the frequency, we get L = (2v/3f).

So, the original length of the trumpet is L = (2 x 343 m/s)/(3 x 510 Hz) = 0.450 m. Adding 0.110 m to the length gives the new length L' = 0.560 m. Using the same formula and harmonic number, we can find the new frequency f' to be f' = (3v/2L') = (3 x 343 m/s)/(2 x 0.560 m) = 869 Hz. Therefore, the new 3rd harmonic frequency is 869 Hz

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What advice would you give to the company that wants to build a bridge in south america? make sure to include whether there is anything the company should change about its design and materials. give specific examples. your answer should include at least five complete sentences. (this is about earthquakes) will make brainlest and 20 points

Answers

For a company looking to build a bridge in South America, it is crucial to consider the region's seismic activity.

To ensure the bridge's safety and durability, I recommend using earthquake-resistant design features, such as base isolation or energy dissipation devices.

It's also important to choose materials with high ductility, like steel or reinforced concrete, which can better withstand the stress from earthquakes.

Additionally, the company should collaborate with local experts and authorities to understand the seismic history and geological conditions of the specific location. Lastly, it is essential to conduct regular maintenance and inspections to ensure the bridge's structural integrity over time.

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(science)
4. Complete the following paragraph by adding the correct terms.

Cells can make new cells. One cell can (a) ____________ into two new cells. This is called (b)__________________. The process of cell division goes through various states. First, the cell nucleus (c)________________ into two. A new cell surface membrane then (d)____________ the cell divides. The two new cells are called (e)_______________ and they are small. They will grow and become larger. They grow by getting (f)______________ from the food that is eaten. Once they grow to full size they can also (g)_____________. If cells divide more quickly than they should, or divide in the wrong way, (h)_____________ can develop.

Answers

Answer:

One cell can divide into two new cells. This is called mitosis. The process of cell division goes through various stages. First the cell nucleus divides into two. A new cell surface membrane then severs the cell divides. The two new cells are called daughter cells and they are small. They will grow larger. they grow by getting nutrients from the food that is eaten. Once they grow to full size they can also reproduce or divide. If cells divide more quickly than they should, or divide in the wrong way, diseases may develop.

Explanation:

Hope that helped

A glass slides across a bar and slows down due to a kinetic friction of 0.175n. if the glass weighs 0.500n, what is the coefficient of kinetic friction between the glass and the bar?

Answers

The coefficient of kinetic friction between the glass and the bar is 0.35. This is found by dividing the force of kinetic friction by the weight of the glass, using the formula for kinetic friction.

The coefficient of kinetic friction is a measure of the frictional force between two surfaces in contact when they are moving relative to each other.

In this problem, a glass slides across a bar and slows down due to kinetic friction of 0.175 N. The weight of the glass is 0.500 N, and we need to determine the coefficient of kinetic friction between the glass and the bar.

The formula for kinetic friction is:

[tex]f_k = \mu_k\; N[/tex]

where [tex]f_k[/tex] is the force of kinetic friction, [tex]\mu_k[/tex] is the coefficient of kinetic friction, and N is the normal force between the two surfaces in contact.

The normal force is equal to the weight of the object in contact with the surface. Therefore, the normal force on the glass is 0.500 N.

Substituting the given values, we get:

[tex]0.175 N = \mu_k (0.500 N)[/tex]

Solving for μ_k, we get:

[tex]\mu_k[/tex] = 0.175 N / 0.500 N

[tex]\mu_k[/tex] = 0.35

Therefore, the coefficient of kinetic friction between the glass and the bar is 0.35.

In summary, the coefficient of kinetic friction between the glass and the bar is 0.35. This is found by dividing the force of kinetic friction by the weight of the glass, using the formula for kinetic friction.

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Complete Question:

A glass slides across a bar and slows down due to a kinetic friction of 0.175N. If the glass weighs 0.500N, what is the coefficient of kinetic friction between the glass and the bar?

A. 0.350

B. 2.86

C. 1.48

D. 0.675

Which characteristic of the moon made it the best choice for the first manned space missions instead another celestial body like mars?.

Answers

Here are some reasons why the Moon was chosen for the first manned space missions:

The moon's proximity to Earth and its relatively low gravity made it the best choice for the first manned space missions, as it was a more feasible target to reach and return from compared to other celestial bodies like Mars.

Additionally, the moon's lack of atmosphere and magnetic field meant that it presented fewer technical challenges for spacecraft to land and operate on its surface.

The characteristic of the Moon that made it the best choice for the first manned space missions, such as the Apollo missions, was its relative proximity to Earth. Compared to other celestial bodies in our solar system, the Moon is the closest and most accessible.

1. Proximity: The Moon is located at an average distance of about 384,400 kilometers (238,900 miles) from Earth. This relatively short distance made it feasible for manned missions using the available technology at the time. Sending astronauts to Mars or other distant celestial bodies would have required significantly more time, resources, and technological advancements.

2. Exploration and Preparation: Before attempting manned missions to more distant destinations, such as Mars, it was important to gain experience and knowledge about human space travel. The Moon provided a relatively nearby and manageable target for astronauts to explore, learn about spaceflight operations, and conduct experiments. It served as a stepping stone for future space exploration endeavors.

3. Safety and Communication: The Moon's proximity to Earth allowed for more straightforward communication and a shorter travel duration. In case of emergencies or technical difficulties during the missions, direct communication and potential rescue operations were more feasible compared to missions to more distant locations like Mars.

4. Scientific Value: The Moon also presented scientific value in terms of studying its geology, lunar samples, and the potential for resource utilization. By conducting manned missions to the Moon, scientists and researchers were able to gather valuable data about the Moon's composition, formation, and potential for future exploration and scientific research.

It's important to note that while the Moon was a logical choice for the first manned space missions, the desire to explore and study other celestial bodies, including Mars, remains a significant goal for future space exploration endeavors.

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Challenge A woman becomes incredibly ill after attending a baby shower. After a day of non-stop vomiting, she goes in to the doctor and is diagnosed with Salmonellosis, a type of food poisoning caused by an infection from the Salmonella bacteria. The doctor prescribes her with ampicillin. The antibiotic helps for a few days, but then the symptoms return. She goes back to the doctor and is prescribed a different antibiotic – ciprofloxacin. This fails to provide any relief, not even for a short amount of time like the first antibiotic did. Describe, in detail, what most likely happened, from an evolutionary standpoint

Answers

Antibiotic resistance is a major problem that has arisen due to the selective pressure exerted on bacterial populations by the overuse and misuse of antibiotics.

What is the evolutionary perspective?

It's possible that the woman who contracted salmonellosis had a strain of Salmonella bacteria that was already resistant to ciprofloxacin and ampicillin, or that the bacteria developed resistance to these antibiotics as a result of her treatment.

This emphasizes the significance of prudent antibiotic usage as well as the requirement for the creation of fresh medications and other treatments to fight antibiotic-resistant bacteria.

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As the color of light changes from red to yellow, the
frequency of the light

Answers

Answer:

As the color of light changes from red to yellow, the frequency of the light increases.

Explanation:

Red light has the longest wavelength and the lowest frequency among visible light, while yellow light has a shorter wavelength and a higher frequency.

The relationship between the frequency and the wavelength of light is given by the equation:

c = λν

where c is the speed of light, λ is the wavelength of light, and ν is the frequency of light.

Since the speed of light is constant in a vacuum, if the wavelength of light decreases as the color changes from red to yellow, then the frequency must increase. This means that yellow light has a higher frequency than red light.

What is the frequency of a light wave with a wavelength of 6. 0 × 10^–7 meter traveling through space? Please explain.

A) 5. 0 × 10^14 Hz

B) 5. 0 × 10^1 Hz

C) 2. 0 × 10^–15 Hz

D) 1. 8 × 10^14 Hz

Answers

The frequency of a light wave with a wavelength of 6.0 × 10^–7 meters traveling through space is 5.0 × 10^14 Hz so that the correct answer is option (A)

To calculate the frequency of a light wave, we can use the formula: frequency (f) = speed of light (c) / wavelength (λ). The speed of light in a vacuum is approximately 3.0 × 10^8 meters per second (m/s).

Given the wavelength of the light wave as 6.0 × 10^–7 meters, we can now determine the frequency.

Step 1: Write down the formula
f = c / λ

Step 2: Substitute the values
f = (3.0 × 10^8 m/s) / (6.0 × 10^–7 m)

Step 3: Calculate the frequency
f = 5.0 × 10^14 Hz

So, the frequency of the light wave is 5.0 × 10^14 Hz, which corresponds to option A.

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A spring has a spring constant of 330 N/m.


how far is the spring compressed if 150 N force is used ?

Answers

0.45 m far is the spring compressed if 150 N force is used in a spring has a spring constant of 330 N/m

Define spring constant

The stiffness of the spring is quantified by the spring constant, k. For various materials and springs, it varies. The spring becomes stiffer and more challenging to stretch as the spring constant increases.

It is used to assess the stability or instability of a spring and, consequently, the system it is meant to serve. Its expression is given by the formula k = - F/x, which reworks Hooke's Law. where x is the displacement caused by the spring, given in N/m, and k is the spring constant.

Force = spring constant * extension

150 = 330 * extension

Extension  = 150/330

Extension = 0.45 m

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A vertical spring with a force constant of 5.2
N/m has a relaxed length of 2.58 m. When
a mass is attached to the end of the spring
and allowed to come to rest, the length of the
spring is 3.50 m.
Calculate the elastic potential energy
stored in the spring.

Answers

Answer:To calculate the elastic potential energy stored in the spring, we can use the formula:

Elastic potential energy = (1/2) * k * Δx^2

where k is the force constant of the spring and Δx is the change in length from the relaxed length.

First, we need to calculate Δx:

Δx = 3.50 m - 2.58 m

Δx = 0.92 m

Now, we can calculate the elastic potential energy:

Elastic potential energy = (1/2) * k * Δx^2

Elastic potential energy = (1/2) * 5.2 N/m * (0.92 m)^2

Elastic potential energy = 2.17 J

Therefore, the elastic potential energy stored in the spring is 2.17 J.

Explanation:

A woman of mass 50 kg runs up a 300m high hill in 5 min. Her power is:
a) 150 W
b) 500 W
c) 100 W
d) 50 W
e) 300 J

Answers

Answer: We can use the formula for power:

Power = Work / Time

To find the work done by the woman, we can use the formula:

Work = Force x Distance

where Force = mass x acceleration, and acceleration = gravity = 9.8 m/s^2

Force = mass x acceleration = 50 kg x 9.8 m/s^2 = 490 N

Distance = 300 m

So, Work = Force x Distance = 490 N x 300 m = 147,000 J

Converting the time of 5 min to seconds, we get:

Time = 5 min x 60 s/min = 300 s

Now, we can calculate the power:

Power = Work / Time = 147,000 J / 300 s = 490 W

Therefore, the woman's power is 490 W (option b).

Explanation:

Answer:

Her power is 50 W

Explanation:

This is because formula for power is (mass*length[in meters])/time[in seconds]

on applying it we get

50kg*300m/300sec = 50 W

If you have a potential energy of 57 J. Now double your height, what is your new potential energy?

Answers

When you double your height, your new potential energy is 114 Joules.

How to find the new potential energy?

The potential energy of an object depends on its height (h) and the force of gravity acting on it (usually denoted as "g"). The formula for gravitational potential energy is given by:

P = mgh

where P is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height.

In this case, you have a potential energy of 57 J. Let's assume that the height (h) is constant, and we'll denote it as h1. So, we have:

P = mgh1 = 57 J

Now, you double your height, which means the new height is 2 times the original height (2h1). Let's denote the new height as h2. So, we have:

h2 = 2h1

Substituting this into the formula for potential energy, we get:

P = mgh2 = mg(2h1)

Since h2 = 2h1, we can rewrite the above expression as:

P = 2(mgh1)

But we know that PE1 = mgh1, so we can substitute this value into the equation:

PE2 = 2(PE1)

So, the new potential energy is:

P = 2*57J = 114J

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What was King Louis XVI's goal for Jacques-Louis David's Oath of the Horatil, 1784

1) to send a moral message

2) to educate the public about antiquity

3) to discourage a revolution

4) to decorate his palace

Answers

The answer is number 1 to send a moral message

At an outdoor physics demonstration, a delay of 0.50
seconds was observed between the time sound
waves left a loudspeaker and the time these sound
waves reached a student through the air. If the air is
at STP, how far was the student from the speaker?

Answers

The student in the problem was 86 m from the speaker

What is the speed of sound in air?

The speed of sound in air depends on various factors such as temperature, humidity, and pressure. At standard temperature and pressure (STP), which is a temperature of 0°C and a pressure of 1 atm, the speed of sound in dry air is approximately 343 meters per second

We know that;

V = 2x/t

v = speed of sound in air

x = distance covered

t = time taken

Then;

x = Vt/2

x = 343 * 0.5/2

x = 86 m

This is the sped of the sound.

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Using a cable with a tension of 1350 n, a tow truck pulls a car 5.00 km along a horizontal roadway. (a) how much work does the cable do on the car if it pulls horizontally

Answers

The work done by the cable on the car is 67500 J.  

To calculate the work done by the cable on the car, we need to use the formula for work, which is:

W = F * d

here W is the work done, So, F is the force applied, and here d is the displacement of the object being moved.

In this case, the force applied by the cable is given by the tension in the cable, which is 1350 N. The displacement of the car is given by the distance it is pulled along the roadway, which is 5.00 km.

We can use the formula for distance to calculate this displacement, which is:

d = 5.00 km

Substituting this value into the formula for work, we get:

W = 1350 N * 5.00 km

W = 67500 J

Therefore, the work done by the cable on the car is 67500 J.  

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A child shoots a 3.0 g bottle cap up a ramp 20° above horizontal at 2.0 m/s. The cap slides in a straight line, slowing to 1.0 m/s after traveling some distance, d. If the coefficient of kinetic friction is 0.40, find that distance.

Answers

Answer:

Approximately [tex]0.21\; {\rm m}[/tex].

(Assuming that [tex]g = 9.81\; {\rm m\cdot s^{-2}}[/tex].)

Explanation:

As the bottle cap slows down, it lost kinetic energy [tex](\text{KE})[/tex]: [tex]\Delta \text{KE} = (1/2)\, m\, (u^{2} - v^{2})[/tex], where [tex]m[/tex] is the mass of the cap, [tex]v = 1.0\; {\rm m\cdot s^{-1}}[/tex], and [tex]u = 2.0\; {\rm m\cdot s^{-1}}[/tex].

The amount of kinetic energy lost should also be equal to the sum of:

gain in gravitational potential energy ([tex]\text{GPE}[/tex]), andwork that friction has done on the cap.

Let [tex]d[/tex] denote the distance that the cap has travelled along the ramp. The height of the cap would have increased by:

[tex]\Delta h = d\, \sin(\theta)[/tex], where [tex]\theta = 20^{\circ}[/tex] is the angle of elevation of the ramp.

The [tex]\text{GPE}[/tex] of the cap would have increased by:

[tex]\Delta \text{GPE} = m\, g\, \Delta h = m\, g\, d\, \sin(\theta)[/tex].

To find the friction on the cap, it will be necessary to find the normal force that the ramp exerts on the cap.

Let [tex]\theta = 20^{\circ}[/tex] denote the angle of elevation of this ramp. Decompose the weight of the cap [tex]m\, g[/tex] (where [tex]m[/tex] is the mass of the cap) into two directions:

Along the ramp: [tex]m\, g\, \sin(\theta)[/tex],Tangential to the ramp: [tex]m\, g\, \cos(\theta)[/tex].

The normal force on the cap is entirely within the tangential direction.

Since the cap is moving along the ramp, there would be no motion in the tangential direction. Forces in the tangential direction should be balanced. Hence, the normal force on the cap will be equal in magnitude to the weight of the cap in the tangential direction: [tex]F_{\text{normal}} = m\, g\, \cos(\theta)[/tex].

Since the cap is moving, multiply the normal force on the cap by the coefficient of kinetic friction [tex]\mu_{\text{k}}[/tex] to find the friction [tex]f[/tex] between the ramp and the cap:

[tex]f = \mu_{\text{k}}\, F_{\text{normal}}[/tex].

After a distance of [tex]x[/tex] along the ramp, friction would have done work of magnitude:

[tex]\begin{aligned} (\text{work}) &= f\, s \\ &= (\mu_{\text{k}}\, F_{\text{normal}})\, (d) \\ &= \mu_{\text{k}}\, m\, g\, \cos(\theta)\, d\end{aligned}[/tex].

Overall:

[tex]\begin{aligned} \Delta \text{KE} &= \Delta \text{GPE} + \mu_{\text{k}}\, m\, g\, \cos(\theta)\, d \\ &= m\, g\, \sin(\theta)\, d + \mu_{\text{k}}\, m\, g\, \cos(\theta)\, d \\ &= m\, g\, (\sin(\theta) + \mu_{\text{k}}\, \cos(\theta))\, d\end{aligned}[/tex].

At the same time:

[tex]\Delta \text{KE} = (1/2)\, m\, (v^{2} - u^{2})[/tex].
Therefore:

[tex]\displaystyle \frac{1}{2}\, m\, (v^{2} - u^{2}) = m\, g\, (\sin(\theta) + \mu_{\text{k}}\, \cos(\theta))\, d[/tex].

[tex]\begin{aligned}d &= \frac{m\, (u^{2} - v^{2})}{2\, m\, g\, (\sin(\theta) + \mu_{\text{k}}\, \cos(\theta))} \\ &= \frac{u^{2} - v^{2}}{2\, g\, (\sin(\theta) + \mu_{\text{k}}\, \cos(\theta))} \\ &= \frac{(2.0)^{2} - (1.0)^{2}}{2\, (9.81)\, (\sin(20^{\circ}) + 0.40\, \cos(20^{\circ}))}\; {\rm m} \\ &\approx0.21\; {\rm m}\end{aligned}[/tex].

yalll pls help 20 points ) How is BMI weight calculated?

Responses

Divide weight by 678.

Double weight.

Subtract weight from heart rate.

Multiply weight by 703.

Answers

Divide weight by 678.

PROBLEM SOLVING


1. An electron is traveling to the north with a speed of 3. 5 x 106 m/s when a magnetic field is turned on. The strength of the magnetic field is 0. 030 T, and it is directed to the left. What will be the direction and magnitude of the magnetic force?



2. The Earth's magnetic field is approximately 5. 9 × 10-5 T. If an electron is travelling perpendicular to the field at 2. 0 × 105 m/s, what is the magnetic force on the electron?



3. A charged particle of q=4μC moves through a uniform magnetic field of B=100 F with velocity 2 x 103 m/s. The angle between 30o. Find the magnitude of the force acting on the charge.



4. A circular loop of area 5 x 10-2m2 rotates in a uniform magnetic field of 0. 2 T. If the loop rotates about its diameter which is perpendicular to the magnetic field, what will be the magnetic flux?

Answers

The magnitude of the force is 1.8 x 10-16 N. The magnetic force on the electron is 1.2 x 10-14 N.  The magnitude of the force acting on the charge is 0.04 N. The magnetic flux will be 0.

1. The direction of the magnetic force on an electron traveling to the north with a speed of 3.5 x 106 m/s in a magnetic field of strength 0.030 T directed to the left can be determined using the right-hand rule.

When the thumb of the right hand points in the direction of the velocity vector, and the fingers point in the direction of the magnetic field vector, the direction of the magnetic force is perpendicular to both and can be found by the direction of the palm.

In this case, the force will be directed downward, and its magnitude can be calculated using the formula [tex]F = qvBsin\theta[/tex] , where q is the charge of the electron, v is its velocity, B is the magnetic field strength, and θ is the angle between the velocity and magnetic field vectors. The magnitude of the force in this case is 1.8 x 10-16 N.

2. The magnetic force on an electron traveling perpendicular to the Earth's magnetic field can also be calculated using the formula F = qvB. In this case, the force is directed perpendicular to both the velocity and magnetic field vectors and is given by

[tex]F = (1.6 \times 10-19 C) \times (2.0 \times 105\; m/s) \times (5.9 \times 10-5 T)[/tex]

F = 1.2 x 10-14 N.

3. In this problem, a charged particle with charge [tex]q = 4\mu C[/tex] is moving with a velocity of 2 x 103 m/s at an angle of 30o to a uniform magnetic field of strength B = 100 F.

The force on the charged particle can be calculated using the formula [tex]F = qvBsin\theta[/tex], where θ is the angle between the velocity and magnetic field vectors. Substituting the values, we get

[tex]F = (4 \times 10-6 C) \times (2 \times 103\;m/s) \times (100 T) \times sin 30^{\circ}[/tex]

F = 0.04 N.

4. The magnetic flux through a circular loop of area 5 x 10-2m2 rotating about its diameter perpendicular to a uniform magnetic field of strength 0.2 T can be calculated using the formula [tex]\phi = BAcos\theta[/tex], where A is the area of the loop, B is the magnetic field strength, and θ is the angle between the magnetic field vector and the normal to the plane of the loop.

Since the loop is rotating about its diameter perpendicular to the magnetic field, the angle between the two vectors is 90, and the flux is given by [tex]\phi = (0.2 T) \times (5 \times 10-2\; m2) \times cos 90^{\circ} = 0[/tex].

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Three point charges lie on the same x-axis. Charge 1 (-2. 1 μC) is at the origin, charge 2 (+3. 2 μC) is at x = 7. 5 cm, and charge 3 (-1. 8 μC) is at x = 11 cm. What are the direction and the magnitude of the total force exerted on charge 1

Answers

The direction of the total force on charge 1 is in positive x-direction and the magnitude is 7.94 N.

The total force on charge 1 due to the other two charges can be found by calculating the electrostatic force between charge 1 and each of the other charges, and then adding the two forces as vectors.

The electrostatic force between two point charges q1 and q2 separated by a distance r is given by Coulomb's law:

[tex]F=k \frac{q_{1}q_{2} }{r^{2} }[/tex]

where k is Coulomb's constant and equal to 9 x 10⁹ Nm²/C².

Since they have opposite signs, the force between charge 1 and charge 2 is attractive.

Given, distance between them, r₁₂ = 7.5 cm = 0.075 m

∴ The magnitude of the force is:

|F₁₂| = {k * |q₁| * |q₂|} / r₁₂²

      = [(9 x 10⁹ Nm²/C²) * (2.1 μC) * (3.2 μC)] / (0.075 m)²

      = 10.75 N.

The direction of the force is towards charge 2, which is in the positive x-direction.

Since they have the same sign, the force between charge 1 and charge 3 is repulsive.

Given, distance between them, r₁₃ = 11 cm = 0.11 m

∴ The magnitude of the force is:

|F₁₃| = {k * |q₁| * |q₃|} / r₁₃²

      = [(9 x 10⁹ m²/C²) * (2.1 μC) * (1.8 μC)] / (0.11 m)²

      = 2.81 N.

The direction of the force is towards charge 3, which is in the negative x-direction.

Total force or Net force on charge 1;

|F| = |F₁₃| - |F₁₂|

    = 10.75 N - 2.81 N (∵ both the forces are in opposite direction)

    = 7.94 N

Therefore, the direction of the total force is in the positive x-direction i.e., towards charge 2.

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To find the total force exerted on charge 1, we need to calculate the individual forces between charge 1 and charges 2 and 3, and then add them vectorially.

The formula to calculate the electrostatic force between two point charges is given by Coulomb's Law:

F = (k * |q1 * q2|) / r^2

where:

- F is the magnitude of the force

- k is the electrostatic constant (k ≈ 9 × 10^9 N m^2/C^2)

- q1 and q2 are the magnitudes of the charges

- r is the distance between the charges

Let's calculate the forces:

For charge 1 and charge 2:

q1 = -2 μC (converted to Coulombs: -2 * 10^-6 C)

q2 = 2 μC (converted to Coulombs: 2 * 10^-6 C)

r = 7.5 cm (converted to meters: 7.5 * 10^-2 m)

Using Coulomb's Law, we can calculate the force between charge 1 and charge 2:

F1-2 = (k * |q1 * q2|) / r

F1-2 = (9 * 10^9 N m^2/C^2) * (|-2 * 10^-6 C * 2 * 10^-6 C|) / (7.5 * 10^-2 m)^2

Calculating this expression yields the magnitude of the force between charge 1 and charge 2.

Now, let's calculate the force between charge 1 and charge 3:

q3 = -1.8 μC (converted to Coulombs: -1.8 * 10^-6 C)

r = 11 cm (converted to meters: 11 * 10^-2 m)

Using Coulomb's Law, we can calculate the force between charge 1 and charge 3:

F1-3 = (k * |q1 * q3|) / r²

F1-3 = (9 * 10^9 N m^2/C^2) * (|-2 * 10^-6 C * -1.8 * 10^-6 C|) / (11 * 10-²m)²

Calculating this expression yields the magnitude of the force between charge 1 and charge 3.

Finally, to find the total force exerted on charge 1, we need to add the forces F1-2 and F1-3 vectorially. Since charge 2 is at a positive x-coordinate and charge 3 is at a negative x-coordinate, the forces will have opposite directions. Therefore, we subtract the magnitudes of the forces:

F_total = F1-2 - F1-3

Now you can perform the calculations to find the magnitude and direction of the total force exerted on charge 1.

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One who is capable of identifying existing and predictable.

Answers

It seems like the phrase you provided is incomplete or ambiguous. However, based on the partial phrase you provided, "One who is capable of identifying existing and predictable," it could refer to a person who has the ability to recognize and understand things that currently exist and can be predicted in the future.

This could describe someone who has a strong analytical or observational skills and can perceive patterns, trends, or regularities in various aspects of life, such as in scientific phenomena, financial markets, human behavior, or other areas where predictability and existing patterns are sought.

If you have a specific context or a more detailed question, please provide additional information, and I'll be glad to provide a more specific response.

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Two narrow slits are 0. 12 mm apart. Light of wavelength 550 nm illuminates the slits, causing an interference pattern on a screen 1. 0 m away. Light from each slit travels to the m=1 maximum on the right side of the central maximum.



Part A) How much farther did the light from the left slit travel than the light from the right slit?


Express your answer in nanometers

Answers

To answer your question about the distance traveled by light from the left slit compared to the right slit, we can use the formula for constructive interference in a double-slit experiment.

The formula for the path difference is given by:

ΔL = m * λ

where ΔL is the path difference (the extra distance traveled by light from the left slit compared to the right slit), m is the order of the maximum (m=1 in this case), and λ is the wavelength of the light (550 nm).

Now, we can plug in the values:

ΔL = 1 * 550 nm

ΔL = 550 nm

So, the light from the left slit traveled 550 nm farther than the light from the right slit in reaching the m=1 maximum on the right side of the central maximum.

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what happens to the core of a high-mass star after it runs out of hydrogen? what happens to the core of a high-mass star after it runs out of hydrogen? it shrinks and heats up. it shrinks and cools down. helium fusion begins right away.

Answers

The fate of the core depends on the mass of the star and the balance between gravity and the pressure created by the nuclear reactions.

When a high-mass star runs out of hydrogen fuel in its core, it starts to undergo significant changes. Initially, the core of the star shrinks and heats up, as the gravitational pull becomes stronger due to the decreased energy output from the nuclear fusion reactions. This increase in temperature and pressure allows for helium fusion to begin, which produces heavier elements such as carbon and oxygen.

The process of helium fusion is much faster than hydrogen fusion, and it causes the core to heat up even more. This can lead to further fusion reactions, creating elements up to iron. The star's outer layers, however, continue to expand and cool, causing it to become a red giant.

Ultimately, the core of a high-mass star will either continue to fuse heavier elements until it can no longer sustain nuclear reactions, leading to a supernova explosion, or it will collapse under its own weight to form a black hole or a neutron star.

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Two skaters are standing in the middle of an ice skating rink. Skater 1 has a mass of 50kg and Skater 2 has a mass of 45kg. When they push off from one another, Skater 1 has a speed of 2 m/s. What must be the speed of Skater 2?

Answers

Two skaters are standing in the middle of an ice skating rink. Skater 1 has a mass of 50kg and Skater 2 has a mass of 45kg. When they push off from one another, Skater 1 has a speed of 2 m/s. The speed of Scater 2 is 2.22 m/s in the opposite direction.

To solve this problem, we need to use the principle of conservation of momentum.

According to this principle, the total momentum of the two skaters before and after the push off must be the same.

Let's assume that Skater 2 moves in the opposite direction to Skater 1 after the push off, with a speed of v. Then, the initial momentum of the two skaters is:

50 kg * 2 m/s - 45 kg * 0 m/s = 100 kg m/s

The final momentum of the two skaters is:

50 kg * 0 m/s - 45 kg * v = -45 kg v

Since the total momentum is conserved, we can equate the two expressions and solve for v:

100 kg m/s = -45 kg v

v = -2.22 m/s

This means that Skater 2 moves away from Skater 1 with a speed of 2.22 m/s. The negative sign indicates that Skater 2 moves in the opposite direction to Skater 1.

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Two asteroids each have mass of 1. 41 x 10^14 kg. The strength of the gravitational force between them is 1,030 N. Calculate the distance between the asteroids

Answers

The distance between the two asteroids is approximately [tex]1.39 * 10^9[/tex]meters.

The gravitational force between two objects can be calculated using the formula:

[tex]F = G * (m_1 * m_2) / r^2[/tex]

where F is the gravitational force, G is the gravitational constant

[tex](6.67 * 10^{-11} Nm^2/kg^2)[/tex].

[tex]m_1[/tex]and [tex]m_2[/tex] are the masses of the two objects, and r is the distance between them.

In this case, we are given that:

[tex]m_1=m_2=1.41 * 10^{14} kg[/tex]

F = 1,030 N

G = [tex]6.67 *10^{-11} Nm^2/kg^2[/tex]

We can rearrange the formula to solve for r:

r = [tex]\sqrt{((G * m_1 * m_2) / F)}[/tex]

Plugging in the given values, we get:

r = [tex]\sqrt{((6.67 * 10^{-11} Nm^2/kg^2 * 1.41 * 10^{14} kg * 1.41 x 10^{14} kg) / 1,030 N) }[/tex]

r = [tex]1.39 * 10^9 meters[/tex]

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(a)(i) A galaxy moves away from the Earth at a speed of 3.9 × 104 km/s.
The speed of light is 3.0 × 105 km/s.
Light from the galaxy is emitted with a wavelength of 6.2 × 10−7 m.
Calculate the change in the wavelength of the light that is received by an observer on the Earth.
(ii) Calculate the wavelength of the light that is received by the observer on the Earth.
(b)One of the pieces of evidence for the Big Bang theory is the red-shift of galaxies. Explain how the red-shift of galaxies supports the Big Bang theory.

Answers

(a)(i) Using the formula for the Doppler effect, we can calculate the change in the wavelength of the light:
Δλ/λ = v/c
where Δλ is the change in wavelength, λ is the original wavelength, v is the speed of the galaxy, and c is the speed of light.

Substituting the values given, we get:
Δλ/6.2 × 10^-7 = 3.9 × 10^4 / 3.0 × 10^5
Δλ = 8.06 × 10^-8 m

(ii) To find the wavelength of the light received by the observer on Earth, we simply subtract the change in wavelength from the original wavelength:
λ' = λ - Δλ
λ' = 6.2 × 10^-7 - 8.06 × 10^-8
λ' = 5.39 × 10^-7 m

(b) The red-shift of galaxies supports the Big Bang theory because it provides evidence that the universe is expanding. The Doppler effect causes light from objects that are moving away from us to be shifted to longer wavelengths (i.e. red-shifted), while light from objects that are moving towards us is shifted to shorter wavelengths (i.e. blue-shifted). The observation that most galaxies are red-shifted indicates that they are moving away from us, and the degree of red-shift is proportional to the distance of the galaxy from us. This means that the farther away a galaxy is, the faster it is moving away from us. This observation supports the idea that the universe is expanding, and that it began with a Big Bang.

(a)(i) To calculate the change in wavelength of light received by an observer on the Earth, we can use the formula for redshift:

z = ∆λ/λ = v/c

where z is the redshift, ∆λ is the change in wavelength, λ is the original wavelength, v is the velocity of the galaxy, and c is the speed of light.

Substituting the given values, we get:

z = ∆λ/6.2 × 10−7 m = 3.9 × 104 km/s / 3.0 × 105 km/s

Solving for ∆λ, we get:

∆λ = λz = 6.2 × 10−7 m × 3.9 × 104 km/s / 3.0 × 105 km/s

∆λ = 8.06 × 10−11 m

Therefore, the change in the wavelength of the light received by an observer on Earth is 8.06 × 10−11 m.

(ii) The wavelength of the light that is received by the observer on Earth can be calculated using the formula:

λ' = λ + ∆λ

where λ' is the new wavelength and λ is the original wavelength.

Substituting the given values, we get:

λ' = 6.2 × 10−7 m + 8.06 × 10−11 m

λ' = 6.2008 × 10−7 m

Therefore, the wavelength of the light received by the observer on Earth is 6.2008 × 10−7 m.

(b) The redshift of galaxies supports the Big Bang theory in two ways:

1. According to the Big Bang theory, the universe is expanding. As the universe expands, galaxies move away from each other, and their light is redshifted. The greater the redshift, the faster the galaxy is moving away from us. The observation of redshift in distant galaxies provides evidence that the universe is indeed expanding.

2. The Big Bang theory predicts that the early universe was much denser and hotter than it is now. This high density and temperature would have caused the universe to emit a lot of radiation, including light. As the universe expanded, this radiation would have cooled and stretched, leading to a cosmic microwave background radiation that fills the universe. The observed spectrum of this radiation is consistent with the predictions of the Big Bang theory. The redshift of distant galaxies provides further evidence for the Big Bang theory, as it is consistent with the idea that the universe was much denser and hotter in the past.

Calculate the weight of an object sitting on the Earth’s surface if the mass of the object is 50 kg? Assuming the force of gravity g = 9. 81 m/s²)

Answers

The weight of an object with a mass of 50 kg on Earth's surface is 490.5 N (Newtons).

To calculate the weight of an object on Earth's surface, we need to consider the mass of the object and the force of gravity (g). In this case, the mass is given as 50 kg, and the force of gravity is assumed to be 9.81 m/s².

Step-by-step explanation:

1. Start with the mass of the object (m) which is given as 50 kg.
2. Next, take the force of gravity (g) as 9.81 m/s² (as provided).
3. Now, we need to use the weight formula, which is:
Weight (W) = mass (m) × force of gravity (g)

4. Substitute the values of mass and force of gravity in the formula:
W = 50 kg × 9.81 m/s²

5. Perform the multiplication:
W = 490.5 N

So, the weight of the object sitting on Earth's surface with a mass of 50 kg is 490.5 Newtons.

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