Physics Middle School

A glass rod is rubbed briefly with silk and the rod becomes able to attract and lift a number of small pieces of paper. If the rod is rubbed with silk for a longer period of time, explain what will happen and why.
QUICKLY PLEASE!

Answers

Answer 1

Answer:

it will have a stronger attraction force

Explanation:

Answer 2

If the rod is rubbed with silk for a longer period of time, then it attract large  number of small pieces of paper.

When A glass rod is rubbed briefly with silk, then glass rod is heated because of rod become positively charged. That  positively charged glass rod attracts the uncharged pieces of paper because some of the electrons present in the paper accumulate at the end near the rod.

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Related Questions

Based on Newton’s 3rd Law of motion, if an archer shoots an arrow at the target, the action force is the bowstring against the arrow. Explain where the reaction force can be found.

Answers

Answer:

maybe target, not sure.

Based on Newton’s 3rd Law of motion, if a baseball player hits a ball with the bat, the action force is the impact of the bat against the ball. Explain where the reaction force can be found.

Answers

the forums is a is equal to f divided by m

What is a way to make magnets?

Heating
Pressure
Freezing

Answers

Answer:

Heating is the answer

Explanation:

I took the quiz and i know its a late response

Freezing  is a way to make magnets from ferromagnetic substance.

What is Curie temperature?

Curie point, also known as Curie Temperature, is the temperature at which the magnetic characteristics of some magnetic materials abruptly change. Remnant magnetism manifests in rocks and minerals below the Curie point, which for magnetite, a common magnetic mineral, is approximately 570 °C (1,060 °F).

In some magnetic materials, atoms that act as small magnets spontaneously align themselves below the Curie point, which for iron is 770 °C (1,418 °F). Because the atomic magnets in each microscopic region (domain) of ferromagnetic materials, such as pure iron, are aligned in the same direction, their magnetic fields reinforce one another.

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Based on Newton’s 3rd Law of motion, if a baseball player hits a ball with the bat, the action force is the impact of the bat against the ball. Explain where the reaction force can be found.

Answers

Answer:

the reaction force will be found where the bat hits the ball.

Explanation:

Answer:

reaction force will be found where the bat hits the ball

Explanation:

An model leans off a bridge railing to take a picture and accidentally drops their phone. The phone's mass is 0.115 kg and the bridge is 15 m tall. The instant the model dropped the phone, it's mechanical energy is 16.9 joules? why?

Answers

Answer:

The statement is true:

Explanation:

As said in the statement, we need to measure the mechanical energy(M.E) of the phone at the instant is dropped:

M.E = P.E + K.E

Given the fall hasn't yet begun, the kinetic energy (K.E) is equal to zero so M.E = P.E

We must use the Potential Energy formula :

P.E = h x m x g

We know that g is equal to 9.8 [tex]J.kg^{-1} .m^{-1}[/tex] on Earth, the height is 15m and m is 0.115:

M.E = 15 x 0.115 x 9.8 = 16.9 Joules

Which of the following statements is true regarding the constructive interference diagram shown below? Select all that apply.

A. The amplitude of the wave is increased.

B. During interference, the wave will produce a louder sound.

C. The amplitude of the wave is decreased.

D. The crests of two waves are overlapping.

E. The troughs of the two waves are overlapping.
There is more than one answer. Help plz

Answers

The answer is d because u can see they are over lapping

The statement i.e. true with respect to the constructive interference diagram should be that the two waves should be overlapped.

What is the constructive interference?

At the time when two waves of the same kind of wavelength should be in phase so they created the new wave along with the amplitude that should be equivalent to the sum of the inidvidual amplitudes so this we called as the constructive interference

As per the given diagram, we can say that the crest for two waves that should be overlapped should be considered.

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An auto company technician is trying to relate a car’s damage in a crash test to the kinetic energy of the car on impact. In addition to the mass of the car, what ratio will the technician need in order to determine to complete his study? The ratio of time to speed, weight to mass, distance to time, or acceleration to speed. Explain why.

Answers

Answer:

????????????????

Explanation:

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Can you help me? Thanks! 10+ points!

Answers

Explanation:

velocity: average velocity equals Displacement /change in time.

Kinetic energy: K=1/2mv^2 (m = Mass) ( v = Velocity).

speed using the kinetic energy is also KE =1/2mv^2

(M in Kg) (V in m/s)

If u need any other help I’d help ! Honestly the person above me answered but feel free to message me if u need help ! I don’t really need the points !
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