Q1. an aluminum pot (c_Al =0.22 cal/g.K is heated to 320C. then an 80g ice cube at 0C isplaces in the pot, it melts and is heated to the boiling point, and 20 grams turns to steam. calculate the mass of the pot.
Q2. A metal cube with 40cm side is heated to 400C. it is placed in a room at 25C. Assume it behaves like a black body. Calculate the net power of cube due to radiation.