Final answer:
To run a 4.00-kW electric clothes dryer, it would take 40 people. Therefore, it would take 40 people to run a 4.00-kW electric clothes dryer.
Step-by-step explanation:
In this question, we are given the power output of a person in good physical condition, which is 100 W.
We need to determine how many people would be required to run a 4.00-kW electric clothes dryer.
To convert power from watts to kilowatts, we divide by 1000.
So, the power output of the clothes dryer is 4.00 kW. To find the number of people required, we divide the power of the clothes dryer by the power output of a single person:
Number of people = Power of clothes dryer / Power output of a single person = 4.00 kW / 0.1 kW
= 40 people
Therefore, it would take 40 people to run a 4.00-kW electric clothes dryer.