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A machine does 1500 J of work in 30 seconds. What is its power output?

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Question: A machine does 1500 J of work in 30 seconds. What is its power output?

Options:

  1. 50 W
  2. 30 W
  3. 75 W
  4. 100 W

Correct Answer: 50 W

Solution: 

Power (P) = Work (W) / Time (t). P = 1500 J / 30 s = 50 W.

A machine does 1500 J of work in 30 seconds. What is its power output?

Practice Questions

Q1
A machine does 1500 J of work in 30 seconds. What is its power output?
  1. 50 W
  2. 30 W
  3. 75 W
  4. 100 W

Questions & Step-by-Step Solutions

A machine does 1500 J of work in 30 seconds. What is its power output?
  • Step 1: Identify the work done by the machine, which is 1500 Joules (J).
  • Step 2: Identify the time taken to do the work, which is 30 seconds (s).
  • Step 3: Use the formula for power, which is Power (P) = Work (W) / Time (t).
  • Step 4: Substitute the values into the formula: P = 1500 J / 30 s.
  • Step 5: Calculate the power output: 1500 J divided by 30 s equals 50 Watts (W).
  • Power Calculation – Power is defined as the rate at which work is done, calculated by dividing the total work done by the time taken.
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