Which of these best describes the difference between energy and power? A) Power and energy have nothing in common B) Energy and
power are the exact same thing. C) Energy has a time component while power does not. D) Power has a time component while energy does not.
1 answer:
D.Power has a time component while energy does not. This is because power is the RATE at which work is performed.
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Given that:
k = 500 n/m,
work (W) = 704 J
spring extension (x) = ?
we know that,
Work = (1/2) k x²
704 = (1/2) × 500 × x²
x = 1.67 m
A spring stretched for 1.67 m distance.
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