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 = $\(1.1 \times 10^3\)$ 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 = $\( 1.1 \times 10^3 \times 7200\)$

Work done = $\(7.92 \times 10^6\)$ Joules

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