A 15.5-kg mass of copper has an apparent mass of 8.7 kg in oil whose SG is 0.77. What is the volume of the copper and its specific weight? A dam is 283 m high when it is full of water. What is the...

A 15.5-kg mass of copper has an apparent mass of 8.7 kg in oil whose SG is 0.77. What is the volume of the copper and its specific weight?

A dam is 283 m high when it is full of water. What is the pounds per square inch absolute at the bottom of the reservoir?