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Q1. A 25kg solid door is 220cm tall, 91cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the door, 15cm from one edge?

Q2. A 500 g chunk of unknown metal that has been in boiling water for several minutes is quickly dropped into an insulating Styrofoam beaker containing 1 kg of water at room temperature (20°C). After waiting and gently stirring for 5 minutes, you observed that the water's temperature has reached a constant value of 22°C. Assume that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal?

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