Answer
4000 seconds
Work Step by Step
We first find the value of Q:
$Q = mc \Delta t = (150)(4184)(50-18) \approx 20 \ MJ$
We now find the change in time:
$\Delta t = \frac{20 \times 10^6 \ J }{5 \times 10^3 \ J/S} = 4000 \ s$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.