mrfun2901
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takes 5 seconds and 2,000 J for a crane to lift a very heavy object. Which of these correctly describes power and energy for this action?

2,000 J of energy was converted into some other energy, requiring 10,000 W of power.
2,000 J of energy was converted into some other energy each second, requiring 400 W of power
2,000 J of power was converted into 400 W of energy.
2,000 J of power was converted into some other power every second, requiring 10,000 W of energy.

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dsdrajlin

A crane takes 5 s and 2,000 J to lift an object. That is, 2,000 J of energy was converted into some other energy each second, requiring 400 W of power.

What is power?

In physics, power is the amount of energy transferred or converted per unit time.

A crane uses 2,000 J of energy (E) to perform work (W) is 5 s (t). Let's calculate the power used (P).

P = W / t = 2,000 J / 5 s = 400 W

Which of these correctly describes power and energy for this action?

  • 2,000 J of energy was converted into some other energy, requiring 10,000 W of power. No, the required power was 400 W.
  • 2,000 J of energy was converted into some other energy each second, requiring 400 W of power. Yes.
  • 2,000 J of power was converted into 400 W of energy. No, energy cannot be converted into power.
  • 2,000 J of power was converted into some other power every second, requiring 10,000 W of energy. No, the required power was 400 W.

A crane takes 5 s and 2,000 J to lift an object. That is, 2,000 J of energy was converted into some other energy each second, requiring 400 W of power.

Learn more about power here: https://brainly.com/question/911620

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