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A machine does 500 J of work in 10 seconds. What is its power?

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Question: A machine does 500 J of work in 10 seconds. What is its power?

Options:

  1. 50 W
  2. 100 W
  3. 200 W
  4. 500 W

Correct Answer: 100 W

Solution: 

Power = Work / Time = 500 J / 10 s = 50 W.

A machine does 500 J of work in 10 seconds. What is its power?

Practice Questions

Q1
A machine does 500 J of work in 10 seconds. What is its power?
  1. 50 W
  2. 100 W
  3. 200 W
  4. 500 W

Questions & Step-by-Step Solutions

A machine does 500 J of work in 10 seconds. What is its power?
Correct Answer: 50 W
  • Step 1: Identify the amount of work done by the machine, which is 500 Joules (J).
  • Step 2: Identify the time taken to do the work, which is 10 seconds (s).
  • Step 3: Use the formula for power, which is Power = Work / Time.
  • Step 4: Substitute the values into the formula: Power = 500 J / 10 s.
  • Step 5: Calculate the result: 500 J divided by 10 s equals 50 Watts (W).
  • Power – Power is the rate at which work is done, calculated as work divided by time.
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