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If a machine does 2000 J of work in 5 seconds, what is its power output?

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Question: If a machine does 2000 J of work in 5 seconds, what is its power output?

Options:

  1. 200 W
  2. 400 W
  3. 500 W
  4. 600 W

Correct Answer: 400 W

Solution: 

Power = Work / Time = 2000 J / 5 s = 400 W.

If a machine does 2000 J of work in 5 seconds, what is its power output?

Practice Questions

Q1
If a machine does 2000 J of work in 5 seconds, what is its power output?
  1. 200 W
  2. 400 W
  3. 500 W
  4. 600 W

Questions & Step-by-Step Solutions

If a machine does 2000 J of work in 5 seconds, what is its power output?
  • Step 1: Identify the amount of work done by the machine, which is 2000 Joules (J).
  • Step 2: Identify the time taken to do the work, which is 5 seconds (s).
  • Step 3: Use the formula for power, which is Power = Work / Time.
  • Step 4: Substitute the values into the formula: Power = 2000 J / 5 s.
  • Step 5: Calculate the result: 2000 divided by 5 equals 400.
  • Step 6: Conclude that the power output of the machine is 400 Watts (W).
  • Power Calculation – Power is defined as the rate at which work is done, calculated using the formula Power = Work / Time.
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