Physics

Problem

An electric heater’s power output increases uniformly from 0 W at

t=0

1.20\times10^{3}

W at

t=60

s as it warms up. How much energy does the heater transfer to its surroundings during this 60 s interval? a)

1.80\times10^{4}\,\text{J}

7.20\times10^{4}\,\text{J}

3.60\times10^{4}\,\text{J}

3.60\times10^{3}\,\text{J}