Chapter 1 Assignment Flashcards
If a person ran 100 meters in 10 seconds, what is there average velocity?
a.) 1000 m/s
b.) 90 m/s^2
c.) 15 m/s
d.) 10 m/s
d.) 10 m/s
A measure of the gravitational force extended on a body is quantified by which unit?
a.) power
b.) pound
c.) velocity
d.) kilogram
b.) pound
In an xray department, you should always strive to follow what important principle?
a.) ARALA
b.) ARRLA
c.) ALARA
d.) AARLA
c.) ALARA
How much force is needed to move a 30 kg piece of equipment at a rate of 3 m/s^2?
a.) 10N
b.) 90N
c.) 60N
d.) 60J
b.) 90N
Decreasing beam restriction has no affect on patient dose.
a.) true
b.) false
b.) false
Another name for a severe radiation burn is acute radiodermititis.
a.) true
b.) false
a.) true
How many seconds are in 30 minutes?
1,800 seconds
What is the velocity of a javelin that travels 45 meters in 3 seconds?
a.) 67 m/s
b.) 135 m/s
c.) 15 m/s
d.) .067 m/s
c.) 15 m/s
How much work is done to move a patient 50 meters if a force of 10N is applied?
a.) 500J
b.) 5J
c.) 300J
d.) .2J
a.) 500J
A battery stored on a shelf is an example of what?
a.) intertia
b.) stable energy
c.) kinetic energy
d.) potential energy
d.) potential energy
In the SI system, the unit of measure for length is:
a.) kilometer
b.) foot
c.) mile
d.) meter
d.) meter
The metric system is also known as the:
a.) system of units (SU)
b.) system international (SI)
c.) british system
d.) french system
b.) system international (SI)
Velocity is a measure of what?
a.) speed
b.) acceleration
c.) stamina
d.) inertia
a.) speed
According to the basic principles of radiation protection, a radiographer should minimize what?
a.) sheilding
b.) time
c.) patient protection
d.) distance
b.) time
Permanently installed equipment consist of units on wheels that can be taken to a patients bedside.
a.) true
b.) false
b.) false
REM is the unit used for absorbed dose.
a.) true
b.) false
b.) false
Anything that occupies space, has form, shape and mass is called:
a.) mass
b.) energy
c.) weight
d.) matter
d.) matter
If 240 J of work is done in 1 minute, how much power is consumed?
a.) 4kg-m/s
b.) 4 m/s
c.) 4 J
d.) 4 W
d.) 4 W
If 20 kg of water freezes, how many kg will the ice weigh?
a.) 3 kg
b.) 5 kg
c.) 10 kg
d.) 20 kg
d.) 20 kg
The purpose of the mirror inside the collimator is to:
a.) reflect the light source
b.) allow the patient to see himself or herself
c.) restrict the xray beam
d.) focus the xray beam
a.) reflect the light source
What is the acceleration of a javelin if the initial velocity is 0, the final velocity is 15m/s and the time of travel is 3 seconds?
a.) 10m/s^2
b.) 1 m/s
c.) 5 m/s
d.) 5 m/s^2
d.) 5 m/s^2
Choose all that apply:
a.) xrays are electrically neutral, therefore unaffected by elctic or magnetic fields
b.) xray travel at the speed of light
c.) xrays can ionize matter
d.) xrays release small amounts of heat when passing through matter
e.) xrays travel at half the speed of light
a.) xrays are electrically neutral, therefore unaffected by electric or magnetic fields
b.) xrays travel at the speed of light
c.) xrays can ionize matter
d.) xrays release small amounts of heat when passing through matter
To help dissipate heat produced during xray production, the xray tube housing is filled with:
a.) water
b.) oil
c.) air
d.) tungsten
b.) oil
How much work is done if a force of 20 N is applied to move a patient 100 meters?
a.) 5 J
b.) 200 W
c.) 2000 J
d.) .5 J
c.) 2000 J
Gray is the SI equivilent of RAD.
a.) true
b.) false
a.) true
In a typical radiographic room, the anode is located
a.) in the middle of the table
b.) within the control panel
c.) over the foor end of the table
d.) over the head end of the table
d.) over the head end of the table
