A Physics Toolkit
Practice Test
1.
The multiplier for SI units with the prefix
deci
is __________.
a.
1/100
b.
100
c.
1/10
d.
10
Hint
2.
__________ describes how well the results of an experiment agree with the standard value.
a.
Precision
b.
Parallax
c.
Accuracy
d.
Significance
Hint
3.
The property of a straight line that is the ratio of the vertical difference between two points to the horizontal difference between the same two points is the __________.
a.
slope
b.
intercept
c.
rise
d.
tangent
Hint
4.
Combinations of SI base units are called __________.
a.
derived units
b.
base quantities
c.
dimensional analogs
d.
straight measurements
Hint
5.
According to Figure 1-16, if a mass of 45.0 g were hung on the spring, how long would the spring be?
a.
576 cm
b.
3.6 cm
c.
46.1 cm
d.
17.3 cm
Hint
6.
Convert 1.45 km to meters.
a.
1.45×10
3
m
b.
0.145×10
-3
m
c.
1.45×10
-3
ft
d.
14.5×10
3
km
Hint
7.
__________ describes the degree of exactness in a measurement.
a.
Precision
b.
Parallax
c.
Significance
d.
Accuracy
Hint
8.
In Figure 1-16, the
y
-intercept of the graphed line is 13.7 cm. What is the physical meaning of this intercept?
a.
It is the distance from the top of the spring to the suspended mass.
b.
It is the distance from the bottom of the spring to the suspended mass.
c.
It is the length of the spring when the experiment is over.
d.
It is the length of the spring when no masses are suspended from it.
Hint
9.
The apparent shift in the position of an object when it is viewed from different angles is caused by __________.
a.
parallax
b.
faulty instruments
c.
imprecise measurement
d.
inaccuracy
Hint
