Q1. A Cs-137 source is homogeneously distributed throughout a right cylindrical bucket of water having diameter height = 30 cm. What is an approximate absorbed dose rate in Gy per day in water at the center of the bucket if 163 atoms of Cs-137 disintegrate per g s? Use the straight-ahead approximation and mean-radius method of calculating the photon dose. Give the answers for each component of the dose.
Q2. A merchant at katmandu sells you the solid gold 1 kg statue for very reasonable price. When you arrive home, you wonder whether or not got a bargain, so you lower statue into a container of water and measure the volume of displaced water. What must be the volume of the displaced water for pure gold?