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Practice Questions

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This activity contains 25 questions.

Question 1.
Which of the following is not a unit of pressure?


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Question 2.
Which of the following is a unit for Bernoulli's equation?


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Question 3.
What is an alternate unit for Bernoulli's equation?


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Question 4.
Which of the following is not a unit for surface tension?


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Question 5.
Which of the following is a unit of density?


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Question 6.
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?


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Question 7.
One cubic centimeter of iron and 1 cubic centimeter of aluminum are dropped into a pool. Which has the largest buoyant force on it?


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Question 8.
One gram of iron and 1 cubic centimeter of aluminum are dropped into a pool. Which has the largest buoyant force on it?


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Question 9.
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?


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Question 10.
One cubic centimeter of oak and 1 cubic centimeter of aluminum are dropped into a pool. Which has the largest buoyant force on it?


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Question 11.
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?


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Question 12.
Ice in a glass of alcohol (density = .8 gm/cm3) melts. Does the level go up, down or stay the same?


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Question 13.
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?


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Question 14.

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?


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Question 15.

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?


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Question 16.

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?


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Question 17.

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?


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Question 18.

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?


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Question 19.
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?


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Question 20.
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?


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Question 21.
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?


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Question 22.
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?


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Question 23.
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?


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Question 24.
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?


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Question 25.
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?


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