students in a lab are doing experiments involving the motion of objects. they pull an object across a table and use a detector to measure the acceleration of the object for the entire time they pull it. The graph shows the data from the detector, with four segments labeled ​

Answer:

20 mins

Explanation:

Answer:

To change degrees Celsius in degrees Fahrenheit, the formula is:

F = 1.8C +32F=1.8C+32

So,C = 1.8C +32C=1.8C+32

C = -40C=−40

T=-40+273.15=233.15\ KT=−40+273.15=233.15 K

0.09/^oC

Answer:

different

Explanation:

everybody have there own way of saying it.

We would discover 64 galaxies the size of the Milky Way in a cube that now holds one galaxy the size of the Milky Way.

A galaxy is a massive clump of gas, dust, and billions of stars and their solar systems bound together by gravity.

The first galaxies were discovered in the 17th century by Charles Messier, who had no idea what they were at the time.

Messier, a proficient comet viewer, noticed many more fuzzy objects in the sky that he knew were not comets.

We would discover 64 galaxies the size of the Milky Way in a cube that now holds one galaxy the size of the Milky Way.

Hence there are 64 galaxies similar in size to the milky way.

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Answer:

4 is correct

Explanation:

The more carbons in a hydrocarbon there are the higher the melting point will become.

Answer:

The generator, in turn, converts the mechanical (kinetic) energy of the rotor to electrical energy. Different types of turbines include steam turbines, combustion (gas) turbines, hydroelectric turbines, and wind turbines.

Answer:

electrical energy ;))

Explanation:

the object moving at constant velocity so the answer is c

For a cylinder of mass M and radius R is released from rest at the top of an inclined plane, the expression is mathematically given as

L=MR * √{gh/3}

Generally, the equation for the angular velocity  is mathematically given as

w=V/R

Therefore

[tex]w=\frac{\sqrt{ugh/3}}{R}[/tex]

In conclusion, at instance of IW, the angular velocity

[tex]L=MR^2/2 * 2\sqrt{gh/3}/R[/tex]

L=MR * √{gh/3}

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Answer:

sup cuh,  i just want the point lol

Explanation: sorry not sorry reases

Hello!

We can use the following equation:

[tex]B = \mu_0 ni[/tex]

B = Magnetic field strength (T)
μ₀ = Permeability of free space (Tm/A)

n = # of loops per unit length

We are given the total number of loops (N), so divide by length:
[tex]n = \frac{N}{l} = \frac{1000}{.86} = 1162.79[/tex]

Now, plug this value into the equation for the magnetic field strength:
[tex]B = (4\pi \times 10^{-7})(1162.79)(3.6) = \boxed{0.00526 T}[/tex]

Answer:

by multiplying speed with time

Explanation:

Answer:

Explanation:

"Larger telescopes" generally means larger apertures. This is the part of the telescope which collects the light. The more light collected, the more clear the picture becomes

Plague disease would cause Isabella's dad to get out his black light. Option B is correct.

A zoonotic is an infectious illness that is spread from animals to humans.

Plague, defined as the  infectious illness. Fever, weakness, and headache are some symptoms.

This often occurs one to seven days following exposure. There are three types of plague, each of which affects a different bodily area and causes various symptoms.

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A frictional torque is exerted on a platform while it rotates because the force is along it's axis and changes only the magnitude and not the direction of the angular velocity.

A frictional torque is a rotational force that is caused by the movement of two objects that are in contact.

To collect data needed to find the frictional torque exerted on the platform while it rotates the experimental procedure the student should use include the following:

The quantities that should be measured is that rotational frictional force and angular velocity.

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What I can infer from these findings is that

This is further explained below

Generally, A pendulum is simply defined as a body that is held from a point and swings under the effect of gravity.

In conclusion, The length of the pendulum varies, but the time period remains constant due to gravity's acceleration at different locations on Earth.

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CQ

A group constructed two pendulums of different lengths and measured their periods multiple times. Their analysis indicated their two samples were indistinguishable. What can you infer from these findings? The two lengths might have been too similar The period of a pendulum is equal to 2pi'sqrt(e) The period of a pendulum is proportional to its length. The two lengths might have been too different.

Answer:

The moment of inertia  about a "fixed"  axis is unique.

The moment of inertia of a square is different for an axis that passes perpendicular to the center of the square as opposed to an axis that lies in the plane of the square.

Torque = I * alpha shows that angular acceleration depends on I but not on the angle thru which I rotates     α = ω / t

Answer:

the correct answer is D

Explanation:

The fundamental measuring unit of electromagnetism is Ampere (electric current.Option 1 is correct.

The physical interplay of electric charges, magnetic moments, and the electromagnetic field is known as electromagnetism.

The electromagnetic field can be static, moving slowly, or forming waves. Electromagnetic waves are commonly referred to as light and are subject to optics laws.

The fundamental measuring unit of electromagnetism is Ampere (electric current.Option 1 is correct.

Hence option 1 is correct.

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Answer:

The battery it consider as one of the circuits elements.

The frequency recorded by the device after the car passes by at the given speed is 474.27 Hz.

The frequency recorded by the device is determined by using the following formula for doppler effect.

[tex]f_o = f_s(\frac{v + v_0}{v- v_s} )[/tex]

where;

[tex]f_o = 448(\frac{343 + 0}{343-19} )\\\\f_0 = 474.27 \ Hz[/tex]

Thus, the frequency recorded by the device after the car passes by at the given speed is 474.27 Hz.

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For a box with a total surface area of 1.2 m2,  the thermal conductivity of the insulating material is mathematically given as

k=5.29*19^{-6} kcal/(s oC m)

Generally, the equation for the   is mathematically given as

P=Ka dT/L

Therefore

k=10*4*10^{-2}/1.2*1.5

k=5.29*19^{-6} kcal/(s oC m)

In conclusion, the thermal conductivity

k=5.29*19^{-6} kcal/(s oC m)

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Answer:

decreased

Explanation:

because it transfered from 10.0s

to 8.0s

Answer:

As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts

Explanation:

Explanation:

Here,

object distance(u)=20cm

image distance(v)=80cm-20cm=60cm

focal length(f)=?

we know ,

(1/f)=(1/v)+(1/u)

1/f = 1/60 + 1/20

1/f = (1+3)/60

60 =4f

f=15cm

Astronomers know that dark matter is present in galactic halos because the speeds of orbiting stars is constant far from the center of the galaxy.

The speed of stars is in the range of 1 kpc to 16 kpc from the galactic centre.

These stars move approximately on circular orbits about the galactic centre along with small peculiar velocities.

For most of the stars, the velocities range between 200 km/s to 250 km/s.

The speed of the stars  orbiting stars remains constant far from the center of the galaxy.

Thus, Astronomers know that dark matter is present in galactic halos because the speeds of orbiting stars is constant far from the center of the galaxy.

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For  a star that has the same apparent brightness as Alpha Centauri A ( 2.7×10−8watt/m2 is mathematically given as

L=2.7*10^30w

Generally, the equation for the luminosity  is mathematically given as

L=4*\pi^2*b

Therefore

L=4*\pi^2*b

L=4* \pi *(2.83*10^{18})*2.7*10^{-8}

L=2.7*10^30

In conclusion, the luminosity

L=2.7*10^30w

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