Question

how much time is required to produce 7.1 w of power given 18.8 j of energy? report your answer to 2 decimal places. your permitted error is ±0.01 w. if your answer is negative, please make sure to include the negative sign. answer

Explanation:

Step1: Recall the power formula

Power \( P=\frac{W}{t} \), where \( P \) is power, \( W \) is work (energy), and \( t \) is time. We need to solve for \( t \), so \( t = \frac{W}{P} \).

Step2: Substitute the given values

Given \( W = 18.8\space J \) and \( P=7.1\space W \). Then \( t=\frac{18.8}{7.1} \).

Step3: Calculate the value

\( t=\frac{18.8}{7.1}\approx2.65\) (rounded to 2 decimal places)

Answer:

2.65