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A machine does 500 J of work in 10 seconds. What is its power output?
Practice Questions
Q1
A machine does 500 J of work in 10 seconds. What is its power output?
50 W
100 W
200 W
500 W
Questions & Step-by-Step Solutions
A machine does 500 J of work in 10 seconds. What is its power output?
Steps
Concepts
Step 1: Understand that power is the rate at which work is done.
Step 2: Know the formula for power, which is P = W/t, where P is power, W is work, and t is time.
Step 3: Identify the values given in the question: W (work) is 500 J and t (time) is 10 seconds.
Step 4: Substitute the values into the formula: P = 500 J / 10 s.
Step 5: Perform the division: 500 J divided by 10 s equals 50 W.
Step 6: Conclude that 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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