GED Science Practice Test: Power
Power is the rate at which work is done and is represented by the following formula:
The unit for power is the Watt. A Watt is a Joule per second (remember that Joules are the unit for work). What the power formula tells you is that for an object doing work faster, that object has more power. A person who lifts boxes to the top of a shelf faster has higher power than a person who lifts boxes to the top of a shelf more slowly.
0 of 1 questions completed
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
0 of 1 questions answered correctly
Time has elapsed
A machine does 600 Joules of work in 30 seconds. What is the power of this machine?