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A machine does 200 J of work in 5 seconds. What is its power output?

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Question: A machine does 200 J of work in 5 seconds. What is its power output?

Options:

  1. 20 W
  2. 40 W
  3. 50 W
  4. 60 W

Correct Answer: 40 W

Solution: 

Power = Work / Time = 200 J / 5 s = 40 W.

A machine does 200 J of work in 5 seconds. What is its power output?

Practice Questions

Q1
A machine does 200 J of work in 5 seconds. What is its power output?
  1. 20 W
  2. 40 W
  3. 50 W
  4. 60 W

Questions & Step-by-Step Solutions

A machine does 200 J of work in 5 seconds. What is its power output?
  • Step 1: Identify the amount of work done by the machine, which is 200 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 = 200 J / 5 s.
  • Step 5: Calculate the result: 200 J divided by 5 s equals 40 Watts (W).
  • Power – Power is the rate at which work is done or energy is transferred, calculated as work divided by time.
  • Work – Work is defined as the product of force and displacement in the direction of the force, measured in joules (J).
  • Time – Time is the duration over which work is done, measured in seconds (s).
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