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Ch 2 - Vanderschaff
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Density =
Mass / Volume
Maginification =
SID / SOD
Velocity=
Distance / Time
Force=
(N)= Mass x Acceleration
Weight=
Mass x Gravity
Momentum=
(P) = Mass x Velocity
Work=
(J) = Force x Distance
Power=
(W) = Work / Time
KE=
1/2mass x Velocity^2
PE=
Mass x Gravity x Height
K=
F=
C=
K=C+273
F=9/5(C) + 32
C=5/9 x (F-32)
Physics
Interactions of matter and energy in all their forms
3 basic quantities?
Mass
Length
Time
1 Yard =
.9144m
1 inch =
2.54 cm
Speed of light =
c=3 x 10^8 m/s
gravity formulas?
g= 9.8 m/s^2
g=32 ft/s^2
1 Lb =
4.5 N
1 HP =
746 W
Meter is defined by...
The distance traveled by light
Unit of measurement?
Kilogram
Unit of Weight or Force?
Newton or Pound
Unit for work
Joule (J)
Unit for heat
Calorie
Unit for ionization intensity in air?
Roentgen (R)
Xray unit output expressed in?
mR
What is a kg?
Mass of 1000cm^3 of water at 4 deg Celsius
Standard unit of time
Second
How is time measured?
By atomic clock and the vibration of cesium atoms
Two parts of a unit
Magnitude
Unit
What are Newton's laws of motion?
1.) Inertia
2.) Force
3.) Action/Reaction
Law of inertia?
Body will remain at rest or will continue to move in a straight line at a constant rate unless acted on by an external force.
Law of Force?
Force of an object is equal to Mass x Acceleration
Law of Conservation of Energy
Energy can be transformed from one form to another, but cannot be created or destroyed
The total amount of energy is ____?
Constant
What is heat?
KE of the random motion of molecules
What is a calorie?
The amount of heat needed to raise the temp. of 1 gram of water by 1 deg Celsius
Heat is transferred by what 3 methods?
Convectional
Conduction
Radiation (Thermal)
What is a cryogen?
Extremely cold liquid
Liquid nitrogen boils at?
77K
Helium boils at ?
4 K
"Standard Units of Measurement" issued by who and when?
ICRU / 1981
1 (R) is equivalent to ___ ion pairs in one __ __ of air?
2.08 x 10^9 .... cubic centimeter
C/kg^3 =
=
=
Coulombs/Kilogram
1 R
2.58 x 10^-4
RAD stands for?
Radiation Absorbed Dose (Traditional Unit)
Gy stand for?
Gray (SI Unit)
How many RADs in 1 Gray?
100.... 100 RAD = 1 Gray
Relationship between "rem" and "sV"
100rem = 1 sV
Relationship between "Ci" and "Bq"?
Ci = Curie (Traditional)
Bq = Bequerel (SI)
1 Ci = 3.7 x 10^10 Bq
RAD and Gray measure?
PT Dose
rem and sV measure?
Occupational Dose
Ci and Bq measure?
Quantity of radioactive material in DPS (Disentegrations per second)...
Author
Anonymous
ID
132098
Card Set
Ch 2 - Vanderschaff
Description
ch 2 material
Updated
2012-02-01T01:16:59Z
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