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4 years ago

When the velocity of an object is doubled, by what factor is its momentum changed? By what factor is its kinetic energy changed?

Physics

1 answer:

anzhelika [568]4 years ago

4 0

Answer:

Kinetic energy would increase by a factor of 4 where as momentum would increase by a factor of 2.

Explanation:

Kinetic Energy is given by 0.5*mass*velocity^2. Kinetic Energy is proportional to Velocity^2.

Momentum is given by mass*velocity. Momentum is proportional to Velocity.

If the velocity of an object is doubled, Kinetic energy would increase by a factor of 2^2 i.e 4 times. Momentum would increase by a factor of 2.

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3 years ago

What is the frequency of the fundamental mode of vibration of a steel piano wire stretched to a tension of 440 N? The wire is 0.

Rasek [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Explanation:

From the question we are told that

The tension is $T = 440 \ N$

The length of the wire is $l = 0.600 \ m$

The mass is $m = 5.60 \ g = 0.0056 \ kg$

Generally the frequency is mathematically represented as

$f = \frac{1}{2l} * \sqrt{\frac{T}{\frac{m}{l} } }$

=> $f = \frac{1}{2 * 0.600 } * \sqrt{\frac{440}{\frac{0.0056}{0.600} } }$

=> $f = 181 \ Hz$

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3 years ago

The equivalent capacitance of three capacitors, each of capacitance C connected at series

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Answer:

In Series:

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Explanation:

For equivalent,

1/C = 3/c

Ce = c/3

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3 years ago

A rock at rest falls off a tall cliff and hits the valley below after 3.5s. What is the rocks velocity as it hits the ground

pogonyaev

T = 3.5 secs

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4 years ago

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4 years ago