How much work is done if 275w of power is used in 20 seconds

Power is the rate of doing work or using energy.

"Watt" means "joule per second".

If energy is used at the rate of 275 watts,

continuously for 20 seconds, then the

total amount of energy involved is

(275 joule/sec) x (20 sec) = 5,500 joules.

If the 275w is the power of something mechanical, like

an elevator, a crane, a pump, or a tractor, then the

5,500 joules of energy is the amount of mechanical work.

The answer is 5,500. you multiply watts by seconds.