A printer has a power of 100 W. It takes 30 seconds to print out a document. How much energy will it have used?

How do you tell if someone actually cares about you? and just say they do?

In a good thermo flask the main cause of heat loss is

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline