A. A person does 5415J of work in 4.5 minutes, how much power, expressed in watts, rounded to the tenths place, was generated?
1 answer:
Answer: I only have the answer for A, but still, the answer is 20.07.
Explanation: Because the number ends in a 15, round to the nearest tenth which is 20. So now the number is 5420. To get the Watts (W) you have to take 5420 and divide it by the time in seconds. 4.5 minutes in seconds is 270, so 5420 divided by 270 equals 20.07. So 20.07 is the answer.
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