Essentials of Radiographic Physics and
Imaging chapter 1, 2, 1nd 3
discovered x-rays - correct answer-German physicist Wilhelm Roentgen discovered x-rays
by accident while experimenting with the CROOKES tube
There were cases of electrocution of the operator because ? - correct answer-the equipment
was not enclosed and shielded.
Barium platinocyanide was the material in Dr. Roentgen's laboratory that - correct
answer-fluoresced when the cathode ray tube was energized
Exposure times for very early radiographs ranged from: - correct answer-20 minutes to 2
hours
Acute radiodermatitis was: - correct answer-the radiation burn resulting from excessive
exposure
common among early patients and operators a delayed reaction to excessive x-ray exposure
An example of how x-rays were used for entertainment or business gain in a dangerous
manner was the: - correct answer-fluoroscopic shoe fitter
Mass, length, and time are considered - correct answer-fundamental quantities
Velocity, acceleration, force, momentum, power and work are: - correct answer-derived
quantities
Exposure, dose, radioactivity and dose equivalent are: - correct answer-radiologic quantities
The metric system is also known as the: - correct answer-System International (SI)
In the SI system the unit of measure for mass is: - correct answer-Kilogram
In the SI system the unit of measure for length is: - correct answer-meter
In the SI system the unit of measure for time is: - correct answer-second
In the British system the unit of measure for mass is: - correct answer-pound
In the British system the unit of measure for length is: - correct answer-foot
In the British system the unit of measure for time is: - correct answer-second
Anything that occupies space, has shape or form, and has mass is? - correct answer-Matter
, _______________ is equal to distance traveled divided by the time needed to cover that
distance. - correct answer-Velocity
V=d/t
units= m/s
Meters per second squared (m/s2) is the unit of measure of: - correct answer-acceleration
acceleration formula is? - correct answer-(Vf-Vi)/t
Acceleration Units is? - correct answer-m/s2
Newton is the unit of measure of: - correct answer-Force
The formula for Force is? - correct answer-F=ma
The units for Force is? - correct answer-N, kg-m/s2
Joule is the unit of measure of: - correct answer-work
The formula for Work is? - correct answer-w=Fd
The units for work is? - correct answer-J, N-m, kg-m2/s2
Watt is the unit of measure of: - correct answer-Power
The formula for Power is? - correct answer-P=w/t
The units for Power is? - correct answer-W, J/s, N-m/s, kg-m2/s2
Fd (force x distance) is the formula to determine - correct answer-Work
Work/time is the formula to determine: - correct answer-Power
The formula mv (mass x velocity) is used to determine: - correct answer-momentum
The formula for Momentum is? - correct answer-p=mv
The units for Momentum is? - correct answer-kg-m/s or N-s
The formula ma (mass x acceleration) is for: - correct answer-Force
What is the velocity of a javelin that travels 45 meters in 3 seconds? - correct answer-15 m/s
v= 45/3
The property of an object with mass that resists a change in its state of motion is: - correct
answer-inertia
The principle of inertia was first described by: - correct answer-Sir Isaac Newton
Imaging chapter 1, 2, 1nd 3
discovered x-rays - correct answer-German physicist Wilhelm Roentgen discovered x-rays
by accident while experimenting with the CROOKES tube
There were cases of electrocution of the operator because ? - correct answer-the equipment
was not enclosed and shielded.
Barium platinocyanide was the material in Dr. Roentgen's laboratory that - correct
answer-fluoresced when the cathode ray tube was energized
Exposure times for very early radiographs ranged from: - correct answer-20 minutes to 2
hours
Acute radiodermatitis was: - correct answer-the radiation burn resulting from excessive
exposure
common among early patients and operators a delayed reaction to excessive x-ray exposure
An example of how x-rays were used for entertainment or business gain in a dangerous
manner was the: - correct answer-fluoroscopic shoe fitter
Mass, length, and time are considered - correct answer-fundamental quantities
Velocity, acceleration, force, momentum, power and work are: - correct answer-derived
quantities
Exposure, dose, radioactivity and dose equivalent are: - correct answer-radiologic quantities
The metric system is also known as the: - correct answer-System International (SI)
In the SI system the unit of measure for mass is: - correct answer-Kilogram
In the SI system the unit of measure for length is: - correct answer-meter
In the SI system the unit of measure for time is: - correct answer-second
In the British system the unit of measure for mass is: - correct answer-pound
In the British system the unit of measure for length is: - correct answer-foot
In the British system the unit of measure for time is: - correct answer-second
Anything that occupies space, has shape or form, and has mass is? - correct answer-Matter
, _______________ is equal to distance traveled divided by the time needed to cover that
distance. - correct answer-Velocity
V=d/t
units= m/s
Meters per second squared (m/s2) is the unit of measure of: - correct answer-acceleration
acceleration formula is? - correct answer-(Vf-Vi)/t
Acceleration Units is? - correct answer-m/s2
Newton is the unit of measure of: - correct answer-Force
The formula for Force is? - correct answer-F=ma
The units for Force is? - correct answer-N, kg-m/s2
Joule is the unit of measure of: - correct answer-work
The formula for Work is? - correct answer-w=Fd
The units for work is? - correct answer-J, N-m, kg-m2/s2
Watt is the unit of measure of: - correct answer-Power
The formula for Power is? - correct answer-P=w/t
The units for Power is? - correct answer-W, J/s, N-m/s, kg-m2/s2
Fd (force x distance) is the formula to determine - correct answer-Work
Work/time is the formula to determine: - correct answer-Power
The formula mv (mass x velocity) is used to determine: - correct answer-momentum
The formula for Momentum is? - correct answer-p=mv
The units for Momentum is? - correct answer-kg-m/s or N-s
The formula ma (mass x acceleration) is for: - correct answer-Force
What is the velocity of a javelin that travels 45 meters in 3 seconds? - correct answer-15 m/s
v= 45/3
The property of an object with mass that resists a change in its state of motion is: - correct
answer-inertia
The principle of inertia was first described by: - correct answer-Sir Isaac Newton
