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ElenaW [278]
3 years ago
11

What is the kinetic energy of a 478 kg object that is moving with the speed of 15 m/s

Physics
1 answer:
Tpy6a [65]3 years ago
5 0
Kinetic energy = (1/2)*mass*velocity^2
KE = (1/2)mv^2
KE = (1/2)(478)(15)^2
KE = 53775J
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Explanation:

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Thank you for reading.

4 0
3 years ago
Jin knows that the initial internal energy of a closed system is 78 J and the final internal energy is 180 J. He also knows that
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As we know by the first law of thermodynamics

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So best describe Jin's Error is

<em>B )For step 1, he should have subtracted 78 J from 180 J to find the change in internal energy. </em>

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boyakko [2]

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