how much time is needed for a 15,000 w engine to do 1,800,000 j of work? (power: p = w/t)\n0.008 s\n8 s\n120…
how much time is needed for a 15,000 w engine to do 1,800,000 j of work? (power: p = w/t)\n0.008 s\n8 s\n120 s\n1,785,000 s
Answer
Explanation:
Step1: Rearrange power formula
The power formula is $P=\frac{W}{t}$, we need to solve for $t$. Rearranging gives $t = \frac{W}{P}$.
Step2: Substitute values
We know that $W = 1800000\ J$ and $P=15000\ W$. Substituting into $t=\frac{W}{P}$, we get $t=\frac{1800000}{15000}$.
Step3: Calculate result
$t = 120\ s$.
Answer:
C. 120 s