Home Chapter 10 Practice Questions

# Practice Questions

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This activity contains 25 questions.

## Which of the following is not a unit of pressure?

 bar atm torr poise Pa

## Which of the following is a unit for Bernoulli's equation?

 N/m Ns/m J/m3 J

## What is an alternate unit for Bernoulli's equation?

 N/m2 N/m3 N/m poise

## Which of the following is not a unit for surface tension?

 N/m J/m2 J/m3

## Which of the following is a unit of density?

 N/m2 N/m3 kg/m3 kg/m2

## One kilogram of iron (density ~7.8 gm/cm3) and 1 kilogram of aluminum (density ~2.7 gm/cm3) are dropped into a pool. Which has the largest buoyant force on it?

 Iron Aluminum Both are the same. Neither has a buoyant force on it.

## One cubic centimeter of iron and 1 cubic centimeter of aluminum are dropped into a pool. Which has the largest buoyant force on it?

 Iron Aluminum Both are the same. Neither has a buoyant force on it.

## One gram of iron and 1 cubic centimeter of aluminum are dropped into a pool. Which has the largest buoyant force on it?

 Iron Aluminum Both are the same. Neither has a buoyant force on it.

## One gram of oak (density ~.8 gm/cm3) and 1 gm of aluminum are dropped into a pool. Which has the largest buoyant force on it?

 Oak Aluminum Both are the same.

## One cubic centimeter of oak and 1 cubic centimeter of aluminum are dropped into a pool. Which has the largest buoyant force on it?

 Oak Aluminum Both would be the same.

## Ice (density = .92 gm/cm3) floats freely in a glass of water. The ice melts. Does the level go up, down or stay the same?

 Up Down Stays the same.

## Ice in a glass of alcohol (density = .8 gm/cm3) melts. Does the level go up, down or stay the same?

 Up Down Stays the same.

## You are on a float in a pool using hand weights. The weights fall overboard. Does the pool water level go up, down, or stay the same?

 Up Down Stays the same.

## The large beaker in the picture is set up so that the water displaced by the submerging weight overflows into the small beaker.In Frame E what are the readings on scales a, b, and c, respectively?

 6 N, 0 N, 4 N 10 N, 0 N, 1 N 10 N, 1 N, 3 N 10 N, 0 N, 4 N

## The large beaker in the picture is set up so that the water displaced by the submerging weight overflows into the small beaker. When would scale (a) again read 10 N?

 B only. C only. D only. E only. All of the above.

## The large beaker in the picture is set up so that the water displaced by the submerging weight overflows into the small beaker. Which frame would the reading on scale (b) read 0.5 N?

 B C D E

## The large beaker in the picture is set up so that the water displaced by the submerging weight overflows into the small beaker. What is the combined weight of the readings on scales b and c in Frames B or C in the animation?

 2 N 4 N 6 N 8 N

## The large beaker in the picture is set up so that the water displaced by the submerging weight overflows into the small beaker.When would scale c in the animation read 3.25 N?

 B C D None of the above.

## For the purpose of this problem use 10 m/s2 for g and 100000 N/m2 for 1 atm.The pressure at A is 9.5 atm and the water velocity is 10 m/s. What is the water velocity at Point C?

 2.5 m/s 5.0 m/s 10.0 m/s 20.0 m/s 40.0 m/s

## For the purpose of this problem use 10 m/s2 for g and 100000 N/m2 for 1 atm.What is the velocity at Point B?

 2.5 m/s 5.0 m/s 10.0 m/s 20.0 m/s 40.0 m/s

## For the purpose of this problem use 10 m/s2 for g and 100000 N/m2 for 1 atm.What is the velocity at Point D?

 2.5 m/s 5.0 m/s 10.0 m/s 20.0 m/s 40.0 m/s

## For the purpose of this problem use 10 m/s2 for g and 100000 N/m2 for 1 atm.What is the pressure at Point C?

 1.0 atm 7.5 atm 8.5 atm 9.0 atm 10.0 atm

## For the purpose of this problem use 10 m/s2 for g and 100000 N/m2 for 1 atm.What is the pressure at Point D?

 1.0 atm 7.5 atm 8.5 atm 9.0 atm 10.0 atm

## For the purpose of this problem use 10 m/s2 for g and 100000 N/m2 for 1 atm.What is the pressure at Point B?

 1.0 atm 7.5 atm 8.5 atm 9.0 atm 10.0 atm

## Assuming that the density of air is a constant 1.3 kg/m3 and that the air pressure is 30 inches (76 cm) of Hg, what is the pressure at the top of a 500 meter high skyscraper?

 27 inches 28 inches 29 inches 31 inches