A 380 g glass coffee cup is at room temper- ature of 20C. It is then plunged into hot dishwater, 81C.

A 380 g glass coffee cup is at room temper-ature of 20◦C. It is then plunged into hotdishwater, 81◦C.If the temperature of the cup reaches thatof the dishwater, how much heat does the cupabsorb? Assume the mass of the dishwateris large enough so its temperature doesn’tchange appreciably and the specific heat ofglass is 840 J/kg ·◦ C.Answer in units of J.

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