1. Suppose you have three spheres of cork, aluminum, and lead, each with diameter 1.5 cm. You drop all three spheres into a cylinder of water. Explain the different behavior of the three spheres upon their release.
2. A solid brass sphere of diameter 11.0 in is lowered into the ocean to a depth of 10,000 ft. Determine the change in diameter, the change in volume, and the strain energy of the sphere due to hydrostatic pressure.