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Q1. A person eats a dessert that contains 230 kcal. The skin temperature of this individual is 36° C and that of her environment is 21° C. The emissivity of her skin is 0.85 and its surface area is 1.3 m2. How much time would it take for her to emit the net radiant energy from her body that is equal to the energy contained in this dessert?

Q2. A beach ball, moving with the speed of +1.31 m/s rolls off a pier and hits the water 0.74 m from the end of the pier. How high above the water is pier?

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