Assignment:
Please review the lab report attached below. On the basis of the report, answer the following question:
Optional Questions:
1 Why is it important that no air bubbles adhere to the objects during measurements?
2 The specific gravity of gold is 19.3. What is the mass in grams of a cubic centimeter of gold? What is the weight in pounds of a cubic foot of gold?
3 A block of metal having a density of 9.00 gm/cm3 has an apparent weight of 180 gm in water and 135 gm when submerged in a liquid. What is the density of the liquid.
4 A block of wood and a block of lead of the same mass are weighed carefully on a trip scale using brass weights. Are the weights of these
blocks the same? Explain.
5 A submarine floats at rest 50 ft deep in water. Without using the propeller how can the captain make it surface? Sink?
6 A rock has a specific gravity of 1.30. Gordon can lift 120 pounds. How many cubic feet of this rock can he lift in air? Water?
7 Oil having a density of 0.80 gm/cm3 floats on water of density 1.0 gm/cm3 . A solid object which has a specific gravity of 0.90 is dropped into the container. Locate its exact position of rest.