Answer
$65\frac{kJ}{min}$
Work Step by Step
We know that
$\frac{Q}{t}=kA\frac{\Delta T}{L}$
We plug in the known values to obtain:
$\frac{Q}{t}=(0.84)(0.84)(0.36)(\frac{15}{0.0035})(\frac{60s}{min})=65\frac{kJ}{min}$
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