Answer
$-2GW$
Work Step by Step
We find:
$\frac{dQ}{dt}=\frac{dE_{int}}{dt}-\frac{dW}{dt}=-3GW-(-1GW)=-2GW$
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.