Question

How much work will a machine with a power rating of 1.1 x 10^3 watts do in 2.0 hours?

Answer 1

The answer to this question is 7.92 * 10^6 J

Answer 2

Power Rating =
`\(1.1 * 10^3\)` W

Time for which the machine is operating = 2 hours

Time in seconds = 2 × 60 × 60

Time = 7200 seconds

Now, we need to use the formula for work done.

Work done = Power × time

Work done =
`\( 1.1 * 10^3 * 7200\)`

Work done =
`\(7.92 * 10^6\)` Joules

Hence, work done by the machine in 2 hours is
`\(7.92 * 10^6\)` J.