States of Matter
Practice Test
1.
A force that produces equilibrium is a(n) __________.
a.
constant
b.
resultant
c.
equilibrant
d.
net force
Hint
2.
Heat is transferred by __________ when objects touch.
a.
radiation
b.
convection
c.
thermoduction
d.
conduction
Hint
3.
__________ is the force that acts between particles of different substances.
a.
Adhesion
b.
Rehesion
c.
Cohesion
d.
Elasticity
Hint
4.
A sled of mass 40.0 kg is pulled along flat, snow-covered ground. The static friction coefficient is 0.28, and the kinetic friction coefficient is 0.08. What force is needed to keep the sled moving at a constant velocity?
a.
3900 N
b.
31 N
c.
3.2 N
d.
310 N
Hint
5.
If you wanted to use a setup like the one in Figure 13-11 to create an upward force triple that of the downward force you exert, which of the following combination of piston areas could accomplish this?
a.
A
1
, 6 m
2
;
A
2
, 18 m
2
b.
A
1
, 6 m
2
;
A
2
, 2 m
2
c.
A
1
, 6 m
2
;
A
2
,10 m
2
d.
A
1
, 6 m
2
;
A
2
, 8 m
2
Hint
6.
__________ have no definite shape and flow.
a.
Solids
b.
Metals
c.
Crystals
d.
Fluids
Hint
7.
Which example demonstrates elasticity?
a.
a snapping rubber band
b.
a bent iron bar
c.
a broken stick
d.
a melted stick of butter
Hint
8.
__________ states that any change in pressure applied to any point on a confined fluid is transmitted undiminished throughout the fluid.
a.
Pascal's principle
b.
Galileo's law
c.
Boyle's law
d.
Dalton's law
Hint
9.
What causes air pressure?
a.
air particles flow through an object
b.
air particles suck away from an object
c.
air particles hit an object
d.
air particles vaporize
Hint
10.
Which is an example of a heat engine?
a.
solar panels
b.
volcano
c.
windmill
d.
automobile engine
Hint
11.
A sled of mass 40.0 kg is pulled along flat, snow-covered ground. The static friction coefficient is 0.28, and the kinetic friction coefficient is 0.08. What force will be needed to start the sled moving?
a.
392 N
b.
147 N
c.
31 N
d.
110 N
Hint
12.
Newton's third law of motion states that __________.
a.
objects remain either at rest or continue moving in a straight line with constant speed only if the net force on that object is zero
b.
a force is needed to keep an object moving
c.
the acceleration of an object is proportional to the net force exerted on the object
d.
all forces come in pairs
Hint
13.
To find the magnitude of the resultant vector for two vectors that are at some angle other than 90°, use __________.
a.
the Law of Cosines
b.
R
2
=
A
2
+
B
2
c.
the Pythagorean theorem
d.
R
2
=
A
2
-
B
2
Hint
14.
Why is it important to take thermal expansion into account when building bridges?
a.
so the bridge materials expand and contract with the changes in weather
b.
so the bridge materials can change state as the weather changes
c.
so the bridge will not move at all
d.
so the bridge materials don't deteriorate
Hint
15.
In Figure 5-11, if A's magnitude is 16 N and B's is 25 N, what is the magnitude of C?
a.
16 N
b.
30 N
c.
19 N
d.
41 N
Hint
16.
Using information from Table 12-2, determine which of the following processes will require the most energy be added.
a.
1 kg of copper is converted from solid to liquid.
b.
1 kg of liquid mercury is frozen.
c.
2 kg of water is evaporated.
d.
1 kg of iron is changed from liquid to gas.
Hint
17.
If the final temperature of a system is greater than the initial temperature, δ
t
is __________.
a.
eliminated
b.
reduced
c.
positive
d.
negative
Hint
18.
A 75-kg person pushes a 12-kg person in a swing with a force of 3 N. What is the acceleration of the person doing the pushing?
a.
0.04 m/s
2
b.
0.25 m/s
2
c.
0.4 m/s
2
d.
25 m/s
2
Hint
19.
Surface tension is a result of __________ in a fluid.
a.
kinetic forces
b.
nuclear forces
c.
cohesive forces
d.
adhesive forces
Hint
20.
Find the magnitude of the sum of a 10-m displacement and a 5-m displacement when the angle between them is 45°.
a.
7 m
b.
9 m
c.
11 m
d.
14 m
Hint
