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If a machine does 500 J of work in 10 seconds, what is its power output?

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Question: If a machine does 500 J of work in 10 seconds, what is its power output?

Options:

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

Correct Answer: 100 W

Solution: 

Power is calculated using the formula P = W/t. Here, W = 500 J and t = 10 s. Thus, P = 500 J / 10 s = 50 W.

If a machine does 500 J of work in 10 seconds, what is its power output?

Practice Questions

Q1
If a machine does 500 J of work in 10 seconds, what is its power output?
  1. 50 W
  2. 100 W
  3. 200 W
  4. 500 W

Questions & Step-by-Step Solutions

If a machine does 500 J of work in 10 seconds, what is its power output?
Correct Answer: 50 W
  • Step 1: Understand the problem. We need to find the power output of a machine that does 500 Joules of work in 10 seconds.
  • Step 2: Recall the formula for power. Power (P) is calculated using the formula P = W/t, where W is work done and t is time taken.
  • Step 3: Identify the values given in the problem. Here, W (work) is 500 Joules and t (time) is 10 seconds.
  • Step 4: Substitute the values into the formula. Replace W with 500 J and t with 10 s in the formula P = W/t.
  • Step 5: Perform the calculation. Divide 500 J by 10 s to find P: P = 500 J / 10 s.
  • Step 6: Calculate the result. 500 divided by 10 equals 50.
  • Step 7: State the final answer. The power output of the machine is 50 Watts.
  • Power Calculation – Power is the rate at which work is done, calculated using the formula P = W/t, where P is power, W is work done, and t is time.
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