Chapter SH, Problem 4.6APP

To determine

To calculate: Power used by a machine.

Answer to Problem 4.6APP

Power used by the machine is $\underset{\_}{32\text{ W}}$ .

Explanation of Solution

Given:

Energy = $\text{800 J}$

Time = $\text{25 s}$

Formula used:

Power is given by,

  $P=\frac{E}{t}$

where E is energy and t is time.

Calculation:

Power is calculated as:

  $\begin{array}{l}P=\frac{E}{t}\\ P=\frac{800\text{ J}}{25\text{ s}}\\ P=32\text{ W}\end{array}$

Conclusion:

Power used by the machine is $\underset{\_}{32\text{ W}}$ .