A machine transfers 3000 J of energy in 30 s. What is its power?
Answer and explanation
Correct answer: C. 100 W
- Step 1: Power = energy time.
- Step 2: W.
Answer
100 W.
Why not the others: 90000 W: energy and time are multiplied. 0.01 W: time is divided by energy. 2970 W: time is subtracted from energy.
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