Physics 011
Chapter 10: Fluids
Practice Questions
Quiz#10
1 
Which of the following is not a unit of pressure? 

bar 

atm 

torr 

poise 

Pa 


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

N/m 

Ns/m 

J/m^{3} 

J 


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

N/m^{2} 

N/m^{3} 

N/m 

poise 


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

N/m 

J/m^{2} 

J/m^{3} 


5 
Which of the following is a unit of density? 

N/m^{2} 

N/m^{3} 

kg/m^{3} 

kg/m^{2} 


6 
One kilogram of Iron (density~7.8 gm/cm^{3}) and 1 kilogram of Aluminum (density~2.7 gm/cm^{3}) 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. 


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? 

Iron 

Aluminum 

Both
are the same. 

Neither
has a buoyant force on it. 


8 
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. 


9 
One gram of Oak (density~.8 gm/cm^{3}) and 1 gm of Aluminum are dropped into a pool. Which has the largest buoyant force on it? 

Oak 

Aluminum 

Both
are the same. 


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? 

Oak 

Aluminum 

Both
would be the same. 


11 
Ice (density=.92 gm/cm^{3}) 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. 


12 
Ice in a glass of Alcohol (density=.8 gm/cm^{3}) melts. Does the level go up, down or stay the same? 

Up 

Down 

Stays
the same. 


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? 

Up 

Down 

Stays
the same. 


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? 

6
N, 0 N, 4 N 

10
N, 0 N, 1 N 

10
N, 1 N, 3 N 

10
N, 0 N, 4 N 


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? 

B
only. 

C
only. 

D
only. 

E
only. 

All
of the above. 


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? 

B 

C 

D 

E 


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? 

2
N 

4
N 

6
N 

8
N 


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? 

B 

C 

D 

None
of the above. 


19 
For the purpose of this problem use 10 m/s^{2} for g and 100000 N/m^{2} 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
m/s 

10
m/s 

20
m/s 

40
m/s 


20 
For the purpose of this problem use 10 m/s^{2} for g and 100000 N/m^{2} for 1 atm. What is the velocity at point B? 

2.5
m/s 

5.0
m/s 

10.
m/s 

20.
m/s 

40.
m/s 


21 
For the purpose of this problem use 10 m/s^{2} for g and 100000 N/m^{2} for 1 atm. What is the velocity at point D? 

2.5
m/s 

5.0
m/s 

10.
m/s 

20
m/s 

40.
m/s 


22 
For the purpose of this problem use 10 m/s^{2} for g and 100000 N/m^{2} for 1 atm. What is the pressure at point C? 

1.0
atm 

7.5
atm 

8.5
atm 

9.0
atm 

10.atm 


23 
For the purpose of this problem use 10 m/s^{2} for g and 100000 N/m^{2} for 1 atm. What is the pressure at point D? 

1.0
atm 

7.5
atm 

8.5
atm 

9.0
atm 

10.atm 


24 
For the purpose of this problem use 10 m/s^{2} for g and 100000 N/m^{2} for 1 atm. What is the pressure at point B? 

1.0
atm 

7.5
atm 

8.5
atm 

9.0
atm 

10.atm 


25 
Assuming that the density of air is a constant 1.3 kg/m ^{3} 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 