Chapter 01
1. Meters per second squared (m/s2) is the unit of measure of [Multiple Choice]
a. velocity
b. momentum
c. force
d. acceleration ✔
ANS: D
Meters per second squared (m/s2) is the unit of measure of acceleration.
2. The radiologic unit that addresses the different biological effects of different types of ionizing radiation is the
[Multiple Choice]
a. rad
b. roentgen
c. sievert ✔
d. gray
ANS: C
The sievert/rem addresses the different biological effects of different types of ionizing radiation.
3. In the SI system the unit of measure for mass is [Multiple Choice]
a. pound
b. gram
c. kilogram ✔
d. ton
ANS: C
The SI system uses kilogram to quantify mass.
4. The device that restricts the x-ray beam to the area of interest is the [Multiple Choice]
a. tube housing
b. collimator ✔
,c. mirror
d. crosshair
ANS: B
The collimator, located beneath the tube housing, restricts the x-ray beam to the area of interest.
5. Kinetic energy is [Multiple Choice]
a. stored energy
b. energy being expended ✔
c. the same as potential energy
d. power
ANS: B
Kinetic energy is energy being used or expended.
6. In the SI system the unit of measure for length is [Multiple Choice]
a. meter ✔
b. kilometer
c. foot
d. mile
ANS: A
The SI system uses meter to quantify length.
7. Mass does not change with gravitational force. [Multiple Choice]
a. True ✔
b. False
ANS: A
Although weight is based on the effect of gravitational force, mass is not.
8. Newton is the unit of measure of [Multiple Choice]
a. velocity
b. momentum
,c. force ✔
d. acceleration
ANS: C
Force is measured in Newtons.
9. What is the velocity of a baseball that travels 15 meters in 2 seconds? [Multiple Choice]
a. 7.5 N.
b. 7.5 m/s2.
c. 7.5 J.
d. 7.5 m/s. ✔
ANS: D
Velocity is determined by dividing the distance traveled (15 meters) by the time necessary to cover the distance
(2 s); therefore 15 m/2 s or 7.5 m/s. The unit of measurement for velocity is meter/second (m/s).
10. 1 rem = ______________. [Multiple Choice]
a. 10-2 Sv ✔
b. 10-1 Sv
c. 10 Sv
d. 102 Sv
ANS: A
One rem is equal to 10-2 Sv or 1/100 Sv.
11. In a typical radiographic room the anode is located [Multiple Choice]
a. over the head end of the table ✔
b. over the foot end of the table
c. in the middle of the table
d. away from the table
ANS: A
In a typical radiographic room the anode is located over the head end of the table.
, 12. What is the momentum of the 20 kg box that is traveling 10 m/s? [Multiple Choice]
a. 200 m/s2.
b. 200 W.
c. 200 kg-m/s. ✔
d. 200 J.
ANS: C
Momentum is determined by multiplying mass (20 kg) by its velocity (10 m/s), resulting in 200 kg-m/s.
Momentum is measured in kg-m/s.
13. Velocity, acceleration, and work are [Multiple Choice]
a. fundamental quantities
b. derived quantities ✔
c. radiologic quantities
d. none of the above
ANS: B
Along with force, momentum and power, velocity, acceleration, and work are derived from the fundamental
quantities.
14. How much force is needed to move a 30-kg piece of equipment at a rate of 3 m/s2? [Multiple Choice]
a. 10 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N.
b. 30 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N.
c. 60 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N.
d. 90 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N. ✔
ANS: D
15. Who brought attention to the dangers of x-rays? [Multiple Choice]
a. Wilhelm Roentgen.
1. Meters per second squared (m/s2) is the unit of measure of [Multiple Choice]
a. velocity
b. momentum
c. force
d. acceleration ✔
ANS: D
Meters per second squared (m/s2) is the unit of measure of acceleration.
2. The radiologic unit that addresses the different biological effects of different types of ionizing radiation is the
[Multiple Choice]
a. rad
b. roentgen
c. sievert ✔
d. gray
ANS: C
The sievert/rem addresses the different biological effects of different types of ionizing radiation.
3. In the SI system the unit of measure for mass is [Multiple Choice]
a. pound
b. gram
c. kilogram ✔
d. ton
ANS: C
The SI system uses kilogram to quantify mass.
4. The device that restricts the x-ray beam to the area of interest is the [Multiple Choice]
a. tube housing
b. collimator ✔
,c. mirror
d. crosshair
ANS: B
The collimator, located beneath the tube housing, restricts the x-ray beam to the area of interest.
5. Kinetic energy is [Multiple Choice]
a. stored energy
b. energy being expended ✔
c. the same as potential energy
d. power
ANS: B
Kinetic energy is energy being used or expended.
6. In the SI system the unit of measure for length is [Multiple Choice]
a. meter ✔
b. kilometer
c. foot
d. mile
ANS: A
The SI system uses meter to quantify length.
7. Mass does not change with gravitational force. [Multiple Choice]
a. True ✔
b. False
ANS: A
Although weight is based on the effect of gravitational force, mass is not.
8. Newton is the unit of measure of [Multiple Choice]
a. velocity
b. momentum
,c. force ✔
d. acceleration
ANS: C
Force is measured in Newtons.
9. What is the velocity of a baseball that travels 15 meters in 2 seconds? [Multiple Choice]
a. 7.5 N.
b. 7.5 m/s2.
c. 7.5 J.
d. 7.5 m/s. ✔
ANS: D
Velocity is determined by dividing the distance traveled (15 meters) by the time necessary to cover the distance
(2 s); therefore 15 m/2 s or 7.5 m/s. The unit of measurement for velocity is meter/second (m/s).
10. 1 rem = ______________. [Multiple Choice]
a. 10-2 Sv ✔
b. 10-1 Sv
c. 10 Sv
d. 102 Sv
ANS: A
One rem is equal to 10-2 Sv or 1/100 Sv.
11. In a typical radiographic room the anode is located [Multiple Choice]
a. over the head end of the table ✔
b. over the foot end of the table
c. in the middle of the table
d. away from the table
ANS: A
In a typical radiographic room the anode is located over the head end of the table.
, 12. What is the momentum of the 20 kg box that is traveling 10 m/s? [Multiple Choice]
a. 200 m/s2.
b. 200 W.
c. 200 kg-m/s. ✔
d. 200 J.
ANS: C
Momentum is determined by multiplying mass (20 kg) by its velocity (10 m/s), resulting in 200 kg-m/s.
Momentum is measured in kg-m/s.
13. Velocity, acceleration, and work are [Multiple Choice]
a. fundamental quantities
b. derived quantities ✔
c. radiologic quantities
d. none of the above
ANS: B
Along with force, momentum and power, velocity, acceleration, and work are derived from the fundamental
quantities.
14. How much force is needed to move a 30-kg piece of equipment at a rate of 3 m/s2? [Multiple Choice]
a. 10 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N.
b. 30 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N.
c. 60 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N.
d. 90 N. Force is determined by multiplying mass (30 kg) by acceleration (3 m/s2) and is measured in Newtons. 30
kg × 3 m/s2 = 90 N. ✔
ANS: D
15. Who brought attention to the dangers of x-rays? [Multiple Choice]
a. Wilhelm Roentgen.
