# Physics: Chapter 2 Test

20 Questions | Attempts: 651
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• 1.
The conversion factor for changing one unit of length to another in the metric system is a multiple of:
• A.

3

• B.

10

• C.

12

• D.

5280

• 2.
The conversion factor for changing one unit of length to another in the English system may be:
• A.

3

• B.

12

• C.

5280

• D.

All of the above

• 3.
Your normal stride as you walk or run would most closely approximate a:
• A.

Millimeter

• B.

Centimeter

• C.

Meter

• D.

Kilometer

• 4.
What is the length of the object pictured next to the metric ruler?
• A.

2.60 inches

• B.

2.60 centimeters

• C.

2.5 centimeters

• D.

3.5 centimeters

• 5.
The metric unit of length closest to the thickness of a toothpick is the:
• A.

Kilometer

• B.

Meter

• C.

Centimeter

• D.

Millimeter

• 6.
The unit of time most often used by physicists is the:
• A.

Second

• B.

Minute

• C.

Hour

• D.

Year

• 7.
The standard second is determined by comparison with the:
• A.

Average solar day

• B.

Speed of light at the equator

• C.

Standard pendulum in France

• D.

Oscillations of a cesium-133 atom

• 8.
The smallest measurable length of a centimeter stick is 0.001 cm.  Which of the following best describes this limit?
• A.

Accuracy

• B.

Precision

• C.

Rounding

• D.

Experiment

• 9.
The approximate number of days in one year is 365.25.  The number of seconds in one year is:
• A.

21,915

• B.

1,314,900

• C.

31,558,000

• D.

3,144,800,000

• 10.
An electronic clock gives the elapsed time as 7:34:21.  How many seconds does this represent?
• A.

73,421

• B.

27,261

• C.

2,481

• D.

734.21

• 11.
The kilogram, the unit used as the standard for mass, is equal to the mass of:
• A.

1,000 cubic centimeters of water

• B.

1 cubic centimeter of water

• C.

A 1,000-cubic centimeter platinum-iridium cylinder in France

• D.

A 1-cubic centimeter platinum-iridium cylinder in France

• 12.
The measure of mass when it is thought of as a resistance to change in motion is called:
• A.

Velocity

• B.

Acceleration

• C.

Inertia

• D.

Speed

• 13.
If scientific notation were used to represent the number 5,280, it would be written:
• A.

5:2:8:0\x00

• B.

5.280 × 10^3

• C.

52.80 x 10^2

• D.

5,280 x 10^0

• 14.
Using scientific notation, the number 0.00000125 is written as:
• A.

1/800,000

• B.

1.25 x 10^-6

• C.

1.25 x 10^6

• D.

8.00 x 10^5

• 15.
Using scientific notation, the ratio      3.2      is written as:                                                           -----------                                                            1,280
• A.

0.0025

• B.

25 x 10^4

• C.

2.5 x 10^-3

• D.

4.00 x 10^2

• 16.
One kilogram of mass has a weight of about 2.2 pounds. The weight of a 50.0-kilogram Rottweiller expressed in pounds is:
• A.

11.0

• B.

110

• C.

2.27

• D.

22.7

• 17.
The weight of a BMW Z-3 1.9 roadster is approximately 2,350 pounds. The weight expressed in scientific notation is:
• A.

2.35 x 10^3 pounds

• B.

23.50 x 10^3 pounds

• C.

2.35 x 10^2 pounds

• D.

23.5 x 10^2 pounds

• 18.
Compared to a 1.0-kilogram chunk of iron, a 1.0-kilogram piece of Styrofoam:
• A.

Has a larger mass

• B.

Contains more matter

• C.

Takes up more space

• D.

Has more inertia

• 19.
Compared to a bicycle, an automobile pushed by a student has more:
• A.

Speed

• B.

Velocity

• C.

Acceleration

• D.

Inertia

• 20.
The value for the ratio of the mass of 1 kilogram to the mass of 1 proton is about:
• A.

1.8 x 10^3

• B.

5.6 x 10^-4

• C.

5.9 x 10^26

• D.

5.9 x 10^-26

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