15. If a 1000 cc. block of metal weighing 1200 g. is placed in the water in mid ocean what will become of it?
16. Prove Archimedes' Principle by use of the principles of liquid pressure.
17. An irregular stone, density 2.5 g. per ccm. displaces 2 cu. ft. of water. What is its weight? Its apparent weight in water?
18. Will the depth to which a vessel sinks in water change as she sails from Lake Ontario into the Atlantic Ocean? Why?
19. If the density of sea water is 1.0269 g. per cubic centimeter and that of ice 0.918 g. per ccm., what portion of an iceberg is above water?
20. In drawing water from a well by means of a bucket, why is less force used when it is under water than when entirely above?
21. A stone which weighs 300 lbs. can be lifted under water with a force of 150 lbs. What is the volume of the stone?
22. The average density of the human body is 1.07 grams per c.c. How much water will a man who weighs 150 lbs. displace when diving? How much when floating?