A small sculpture made of brass (p = 8470 kg/m^3) is believed to have a secret central cavity. The weight of teh sculpture in air is 15.76N. When it is submerged in water, the weight is 13.86N. What is the volume of the secret compartment? Fb = W W = pgV 15.76 = 8470 * 9.8 * V 15.76 = 83006V 1.89x10^-4 = V 13.86 = 8470 * 9.8 * V 13.86 = 83006V 1.66x10^-4 = V 1.89x10^-4 - 1.66x10^-4 = 2.3x10^-6 This is wrong. Why?