Question

A machine does 4000 joules of work in 50 seconds. What is the power of this machine?

Answer 1

$Given, \\ \\ Work\:=\:4000\:joules\:\:\:\:\:\:Time\:=\:50\:seconds \\ \\ Power \: = \frac{Work\:done}{Time} \\ \\ Power \: = \: \frac{400 \cancel0}{ 5 \cancel0} \\ \\ \color{aqua}{ \underline{ Power \: = \: 80 \: \:watt}}$

Therefore the power of the machine is 80 watt.