Final answer:
To run a 4.00-kW clothes dryer, 40 people producing 100 W each are needed. For an 800 MW power plant, 8 million people would be required to produce the equivalent power.
Step-by-step explanation:
Electric Power and Human Energy Contribution
To calculate how many people it would take to run a 4.00-kW electric clothes dryer, we simply divide the dryer's power requirement by the power output of one person. If one person can produce 100 W of power:
- 4.00 kW = 4000 W
- 4000 W / 100 W/person = 40 people
Therefore, it would take 40 people to run the dryer.
To replace a large electric power plant that generates 800 MW, we follow the same method:
- 800 MW = 800,000 kW
- 800,000 kW = 800,000,000 W
- 800,000,000 W / 100 W/person = 8,000,000 people
Thus, 8,000,000 people would be needed to replace the power plant.