Question

a person in good physical condition can put out 100 w of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. neglecting any problems of generator efficiency and practical considerations such as resting time, answer the following. (a) how many people would it take to run a 5.00 kw electric clothes dryer? people

Answer 1

Approximately 50 people would be required to run a 5.00 kW electric clothes dryer for one hour, assuming that each person can produce 100 W of useful power for several hours at a time.

Step-by-step explanation:

Power = Energy / Time

We can isolate the energy by multiplying both sides by time:

Energy = Power x Time

If we assume that the clothes dryer would run for 1 hour, the energy required would be:

Energy = 5.00 kW x 1 h = 5.00 kWh

Number of people = Energy required / Power per person

Number of people = 5.00 kWh / (100 W/person)

Number of people = 50 people