A computer is programmed to do 2,200,000 J of work in one second. What is the power of the computer if it runs for one hour?

Answer 1

Power is defined as work per second. So the power here is 2,200,000 J/ 1 sec which is just 2,200,000 Watts. So the power is not changing. It is simply the rate at which work is done. So a more appropriate question is how much WORK is done in an hour. To calculate that we would multiply power by time in seconds. SO, we get 2,200,000 J *(3600 sec) which comes out to 7,920,000,000 J of energy used. Hope that helps!