Chapter 16:
Solids, Liquids, and Gases
Practice Test
1.
A block of wood with a mass of 1.2 kg is floating in a container of water. If the density of water is 1.0 g/cm
3
, what is the volume of water displaced by the floating wood?
a.
11,800 cm
3
b.
0.8 cm
3
c.
1.2 cm
3
d.
1,200 cm
3
Hint
2.
A book is sitting on a desk. The area of contact between the book and the desk is 0.06 m
2
. If the book's weight is 30 N, what is the pressure the book exerts on the desk?
a.
101,800 Pa
b.
0.18 Pa
c.
500 Pa
d.
101,300 Pa
Hint
3.
The pressure on a balloon that has a volume of 7 L is 100 kPa. If the temperature stays the same and the pressure on the balloon is increased to 250 kPa, what is the new volume of the balloon?
a.
2.8 L
b.
1,750 L
c.
17.5 L
d.
700 L
Hint
4.
The weight of the water displaced by a person floating in the water is 686 N. What is the person's mass?
a.
70 kg
b.
686 kg
c.
6,720 kg
d.
0.014 kg
Hint
5.
5. A book is sitting on a desk. If the surface area of the book's cover is 0.06 m
2
, and atmospheric pressure is 100.0 kPa, what is the downward force of the atmosphere on the book?
a.
1,667 N
b.
6 N
c.
600,000 N
d.
6,000 N
Hint
6.
The air in a tire pump has a volume of 1.50 L at a temperature of 5°C. If the temperature is increased to 30°C and the pressure remains constant, what is the new volume?
a.
9.0 L
b.
1.38 L
c.
0.25 L
d.
1.63 L
Hint
7.
Two cylinders contain pistons that are connected by fluid in a hydraulic system. A force of 1,300 N is exerted on one piston with an area of 0.05 m
2
. What is the force exerted on the other piston which has an area of 0.08 m
2
?
a.
26 N
b.
65,000 N
c.
2,080 N
d.
2,600 N
Hint
8.
A gas-filled weather balloon floating in the atmosphere has an initial volume of 850 L. The weather balloon rises to a region the pressure is 56 kPa, and its volume expands to 1700 L. If the temperature remains the same, what was the initial pressure on the weather balloon?
a.
15.2 kPa
b.
112 kPa
c.
25,800 kPa
d.
28 kPa
Hint
9.
A gold bar weighs 17.0 N. If the density of gold is 19.3 g/cm
3
, what is the volume of the gold bar?
a.
0.88 cm
3
b.
90.0 cm
3
c.
1.13 cm
3
d.
0.09 cm
3
Hint
10.
In a hydraulic system, a force of 7,500 N is exerted on a piston with an area of 0.05 m
2
. If the force exerted on a second piston in the hydraulic system is 1,500 N, what is the area of this second piston?
a.
0.25 m
2
b.
375 m
2
c.
75 m
2
d.
0.01 m
2
Hint
