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Arisa [49]
3 years ago
15

An object that has kinetic energy must what ?

Physics
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0

An object that has kinetic energy must be <em>moving</em>.

The formula for an object's kinetic energy is

KE = (1/2) · (the object's mass) · <u><em>(the object's speed)²</em></u>

As you can see from the formula, if the object has no speed, then its kinetic energy is zero.  That's why kinetic energy is usually called the "energy of motion", and if an object HAS kinetic energy, then that tells you right away that it must be moving.

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A 5.0-kg centrifuge takes 95 s to spin up from rest to its final angular speed with constant angular acceleration. A point locat
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Answer:

(a) 17.37 rad/s^2

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Explanation:

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(a) Use first equation of motion for rotational motion

w = w0 + α t

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(b) Let θ be the angular displacement

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w^2 = w0^2 + 2 α θ

1650^2 = 0 + 2 x 17.37 x θ

θ = 78367.87 rad

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Answer:

4 Ohms

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R = V/I

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