High School

160 students sit in an auditorium listening to a physics lecture. Each student is using 125 W of metabolic power, slightly more than they would use at rest. An air conditioner with a COP (Coefficient of Performance) of 5.0 is being used to keep the room at a constant temperature.

What minimum power should be used to operate the air conditioner?

Answer :

Answer:

minimum power should be used to operate the air conditioner is 4000 W

Explanation:

given data

students n = 160

power p = 125 W

COP = 5.0

to find out

what minimum power should be used

solution

we know the COP formula that is given below

COP = students × power / minimum power

minimum power = n × p / COP

put all value

minimum power = n × p / COP

minimum power = 160 × 125 / 5

minimum power = 4000 W

minimum power should be used to operate the air conditioner is 4000 W

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