What were the different methods used for testing the paperclip and the water cohesion on the penny?

The force constant that is needed to produce a period of 0.500 s for a 0.0150-kg mass is 2.37 N/m

Period (T) = 0.5 s

Mass (m) = 0.015 Kg

Pi (π) = 3.14

Spring constant (K) =?

The spring constant can be obtained by using the formula for calculating the period of simple harmonic motion. This is illustrated below

T = 2π√(m /K)

Square both side

T² = 4π²m / K

Cross multiply

T² × K = 4π²m

Divide both side by T²

K = 4π²m / T

K = (4 × 3.14² × 0.015) / 0.5²

K = 2.37 N/m

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For a disk whose rotational inertia is 450 kg.m2 hangs from a wire whose torsion constant is 2300 N.m/rad, the angular acceleration is mathematically given as

a =  1.176 rad/s^2

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

a = torsion constant x theta/inertia

therefore,

a =  2300 x 0.23/450

a =  1.176 rad/s^2

In conclusion, the  angular acceleration  is

a =  1.176 rad/s^2

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Answer:

a) the result capacitor

ct=c1+c2+c3+c4

ct=2×10^-6+4×10^-6+6×10^-6+8×10^-6

ct=20×10^-14

b)q=ct×v

q=20×10^-14×50

q=1000×10^-14 c

Explanation:

c)v1=q/ct

v1=1000×10^-14/20×10^-14

v1=50 volt

v2=

Answer:

√h₁/h₂

Explanation:

In free fall, the square of the time taken by the body is directly proportional to the height from which it is dropped.

Ratio

According to second equation of kinematics for free fall

So

[tex]\\ \rm\Rightarrow h\propto t^2[/tex]

[tex]\\ \rm\Rightarrow h_1:h_2::t_1^2:t_2^2[/tex]

[tex]\\ \rm\Rightarrow t_1:t_2::\sqrt{h_1}:\sqrt{h_2}[/tex]

Hubble space telescope, Hubble deep field guide, moon, mercury, Saturn, sun, galaxy messier 101

Answer:

1-Hubble Deep Field Galaxy

2-Galaxy Messier 101

3-Sun

4-Saturn

5-Mercury

6-Moon

7-Hubble Space Telescope

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Here's the answer ~

1. The energy that has been given to the solid material is being used to change its phase from solid to liquid.

2. This all energy is converted into latent heat of fusion causing change in state. so there's no increase in temperature.

Answer →

a) The phase of solid material is changing due to Absorption of heat.

b) The energy that is being supplied to it is absorbed by the material to break the intermolecular bonds.

Explanation:

Heat is a mod of transfer of energy, and solid is a giant network of atom or ions closely bounded with high inter molecular forces. When the bonds are formed lead to release in energy hence to break the bond you need to supply energy and that energy supplier is heat. Generally there are two types of heat, one that you sense as rising temperature and another where you see a gradually change in the phase of material. When the heat that you supply is being absorbed that means the energy is being consumed(absorbed) by the material, to break the bonds, and you doesn't sense the temperature of material being raised but the change in state of material from solid→Liquid, solid→gas depends on the type compound, the phase of material changes, same thing happens in reverse case from Gas→Liquid, Liquid→Solid, the energy is released in atmosphere. this absorbed or released energy(heat) is Latent heat.

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We can confirm that when you travel in an elevator, the utricle and saccule detect when the elevator is moving.

These are small organs located in the inner ear. They serve a very important function in our everyday life. These otolith organs are responsible for the detection of movement and provide us with a sense of spatial orientation. They accomplish this by stimulating very small, hair-like cells with a specialized fluid.

Therefore, we can confirm that when you travel in an elevator, the utricle and saccule detect when the elevator is accelerating or decelerating.

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Answer:

D

Explanation:

Gravity is a force that pulls objects down toward the ground. When objects fall to the ground, gravity causes them to accelerate. Acceleration is a change in velocity, and velocity, in turn, is a measure of the speed and direction of motion.

A=9.8m/s^2 or the gravitational accelerational

If a stone dropped from the roof of a single-story building to the surface of the earth speeds up because of an almost constant force of gravity acting upon it,there4fore the correct answer is option D.

It can be defined as the force by which a body attracts another body towards its center as the result of the gravitational pull of one body and another,

For any free-falling object, the acceleration due to gravity is constatant.

The correct response is option D if a stone thrown from the roof of a one-story structure to the surface of the ground accelerates due to an almost constant force of gravity acting upon it.

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Explanation:

w = v/r

= 15/ 45 = 1/3 rads-¹

a = w²r

= 1/9 • 45 = 5 ms-²

F = mv²/r

= 1200• 15• 15/45

= 6000N

The car, when rounding the curve, is pulled towards the center by the friction between it's wheels and the road.

The magnitude of the electric field will be 64.38 V/m. Mathematically, the electric field is found as the ratio of the voltage per unit length.

A physical field that surrounds electrically charged particles and exerts a force on all other charged particles in the field, either attracting or repelling them, is referred to as an electric field.

The magnitude of the electric field in terms of the pointing vector for this wave  is found as;

[tex]\rm E_{MAX} = \sqrt{S \times c \times \mu_0 }[/tex]

Where,

E is the electric field

c is the speed of light

[tex]\mu_0[/tex] is the permeability

On Putting the given data ;

[tex]\rm E_{MAX} = \sqrt{11.0 \times 3 \times 10^8 \times 4 \times \pi \times 10^{-7}} \\\\\ \rm E_{MAX} =\sqrt{4144.8} \\\\ E_{MAX} =64.38 \ V/m[/tex]

Hence, the magnitude of the electric field will be 64.38 V/m.

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Answer:

The photoelectric effect is a phenomenon in which the photoelectrons are emitted from the metal when an incident electromagnetic wave hits the metal. The incident light should have a threshold frequency to meet the work function of the metal

The height to which the weight-watcher must climb to work off the equivalent 991 (food) Calories is 0.59 Km

1 food calorie = 103 calories

Therefore,

991 food calories = 991 × 103

991 food calories = 102073 calories

Multiply by 4.2 to express in joule (J)

991 food calories = 102073 × 4.2

991 food calories = 428706.6 J

E = mgh

Divide both side by mg

h = E / mg

h = 428706.6 / (73.9 × 9.8)

h = 591.95 m

Divide by 1000 to express in km

h = 591.95 / 1000

h = 0.59 Km

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Answer:

C

Explanation:

I would have to say C because the girl is constantly moving in the act of serving the volleyball.

Answer:

torques must balance for equilibrium

counterclockwise = clockwise

1.5 X = 4 * 20

x = 80 N-m / 1.5 m = 53 N

(D) is correct

Answer:

See below

Explanation:

Coulomb's Law    Force = k q1 q2 / r^2

k = Coulomb's constant = 8.9875517 x 10^9  kg m^3 /s^2 C^2

    Force =  8.9875517 x 10^9   * 7 * 5  / (5925^2)  = 8960.5102 N

Answer:

C: Every mass exerts a gravitational force on every other mass

This statement is true

Answer:

the answer will be about 126 rad/s

Explanation:

Answer:

-2.25

Explanation:

v=u+at

0=9+a(4)

9+4a=0

4a=-9

a= -2.25

the rate of acceleration of the car coming to a stop is 2.25 m/s².

speed is described as. the pace at which an object's location changes in any direction. Speed is defined as the distance traveled divided by the travel time. Speed is a scalar quantity because it just has a direction and no magnitude.

given, A person driving in a neighborhood traveling 9 m/s slows to a stop (0 m/s) over 4 seconds as they approach a stop sign.

The acceleration of the car can be calculated using the formula:

acceleration = (final velocity - initial velocity) / time

Here, the initial velocity is 9 m/s (the speed at which the car was traveling before braking),

the final velocity is 0 m/s (the speed at which the car comes to a stop), and the time taken to stop is 4 seconds. Substituting these values into the formula,

we get:

acceleration = (0 m/s - 9 m/s) / 4 s

acceleration = -9 m/s / 4 s

acceleration = -2.25 m/s²

The negative sign indicates that the car is decelerating, or slowing down.

Therefore, the rate of acceleration of the car coming to a stop is 2.25 m/s².

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Answer:

Potential

Explanation:

The most accurate term is Electrostatic potential energy

It's named like this because the force between charges or electrons is called electrostatic force .

The characteristics shared by both heating and cooling curves is that phases changes when the temperature stays the same.

Heating is the process by which the temperature of a place or substances or object is increased.

Cooling Is the process of lowering the temperature of a substance or object by using conditioners or by freezing .

Therefore, The characteristics shared by both heating and cooling curves is that phases changes when the temperature stays the same.

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Answer:

I believe the answer is esophagus

Wave is best described as a pulse that carries energy and is denoted as option A in this context.

This is a disturbance which carries energy from one place to another without the movement of the matter.

Since matter isn't moved then it is best described as a pulse which carries energy from one place to another.

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Answer:A

Explanation:

Answer:

The distance is shortenend by factor .1715

Explanation:

5 n  = 1/r^2

sqrt (1/5) = r

170 n  = 1 / ( x sqrt(1/5))^2

(xsqrt 1/5)^2 = 1/170

x sqrt 1/5  = .076696

x = .1715    

Answer:

(d) is not affected practically

Explanation:

A bird sitting on a high power line is not affected practically.

This is because both of its legs are at the same potential, and current cannot flow through its body.

Answer:

option D

Explanation:

The bird sitting on a high power line but the bird is not touching ground by its body parts .

Hence there is no way electricity can pass through its body to earth

Thus it won't get any shock .

If everything lies perfectly for superposition to occur, the force on a car is 1000 N.

Superposition is the phenomenon of placing one wave over the other so that they coincide. The resultant force will be zero.

The force in kg will be

1mteric ton = 1000 kg

1metric ton per m²= 1000 N

1000 N force is applied to a car, which will be equal and opposite to the massive wave.

The equal force will act on a car equal to 1000 N.

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Marley was the victim of a hoax. The synonym of the hoax is a practical joke, joke, jest, prank, trick, jape, and fraud.

To dupe someone into believing or accepting something untrue and frequently absurd as genuine.

A practical joke, joke, jest, prank, trick, jape, and scam are all synonyms for a hoax.

Marley stayed up late to watch the planet Mars rise in the east. She had read online that Mars was unusually close to the Earth in its orbit and would look nearly as large as the moon.

However, she only saw stars, and the next morning she ended up oversleeping because of her late bedtime. Marley was the victim of a hoax.

Hence a hoax is a correct answer.

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