how many watts of power do you expend when you exert a force of 0.70 n that moves a book 3.0 m in a time…

how many watts of power do you expend when you exert a force of 0.70 n that moves a book 3.0 m in a time interval of 1.3 s? express your answer to two significant figures and include the appropriate units. p = value units

how many watts of power do you expend when you exert a force of 0.70 n that moves a book 3.0 m in a time interval of 1.3 s? express your answer to two significant figures and include the appropriate units. p = value units

Answer

Explanation:

Step1: Calculate work done

Work (W = F\times d), where (F = 0.70\ N) and (d=3.0\ m). So (W=0.70\times3.0 = 2.1\ J).

Step2: Calculate power

Power (P=\frac{W}{t}), with (W = 2.1\ J) and (t = 1.3\ s). Then (P=\frac{2.1}{1.3}\approx1.6\ W).

Answer:

1.6 W