Choose the best answer. It does not matter how many questions you miss. What matters is that you learn from any mistakes.
An iceberg is made from, salty, ocean water. Suppose an iceberg floated down to the fresh water of the Hudson River in New York. If the density of an iceberg is 917 kg/m3, then what percent of the iceberg is under water? (The density of fresh water is 1000 kg/m3.)
1% is under water
8% is under water
50% is under water
92% is under water.
A barge has a mass of 95,000 kg, with a volume of 100 m3. The barge is placed in the Mississippi River. What is the maximum amount of additional weight the barge can take on before it sinks?
5000 N
49,000 N
This barge is already too heavy and will not float.
If you were placed in each of these fluids, which would make you float the highest above the "waterline?"
Oil density = 900 kg/m3
Fresh water density = 1000kg/m3
Salt water density = 1024 kg/m3
Quicksand: density = 2000 kg/m3
Oil
Fresh water
Salt Water
Quicksand
If you were to stand on a scale to measure your weight, what location for you and scale would give you the largest reading?
In a vacuum.
100 % helium
In the air.
In fresh water.
An air filled ball is sitting still on roof of an under water cave. What does the free body diagram look like for the ball?