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RAD150 Chapter 1
| Question | Answer |
|---|---|
| Velocity= v | distance/time d/t |
| Average Velocity= _ v | (initial + final velocity)/2 (Vo+Vf)/2 |
| Acceleration= a | (final - initial velocity)/time (Vf-Vo)/t |
| Force= F | mass x acceleration ma |
| Weight= Wt | mass x acceleration of gravity mg |
| Momentum= p | mass x velocity mv |
| Work= W | force x distance Fd |
| Power= P | work/time w/t |
| Kinetic energy= KE | 1/2(mass)(velocity)^2 1/2mv^2 |
| Potential energy= PE | mass x gravity x height above earth's surface mgh |
| Temperature in celsius= Tc | 5/9(Tf-32) |
| Temperature in farenheit= Tf | 9/5Tc+32 |
| Temperature in Kelvin= Tk | Tc+273 |
| kilo- (k) | 1000 |
| mega- (M) | 1,000,000 |
| giga- (G) | 1,000,000,000 |
| centi- (c) | 1/100 |
| milli- (m) | 1/1000 |
| micro- (u) | 1/1,000,000 |
| Define mass | quantity of matter described by its energy equivalence |
| Define weight | force exerted on a body by gravity |
| Define energy | ability to do work |
| How is energy measured? | joules or electron volts |
| Define radiation | transfer of energy |
| 4 types of natural/environmental radiation | cosmic rays, terrestrial, internal radionuclides, radon |
| When, how and by whom were xrays discovered? | 1895 by Roentgen using Crooke's tube |
| Who developed 1st fluoroscope and when? | 1898 by Edison |
| What was urged in 1904 by Rollins? | collimation and ALARA |
| What combined in 1913? | Snook transformer & Coolidge tube |
| 3 basic quantities | mass (kg), time (s), length (m) |
| Every measurement must have what 2 components? | magnitude & unit |
| What are Newton's 3 laws? | inertia, force, action/reaction |
| 3 ways heat is transferred? | conduction, convection, radiation |
| Air kerma (Gy) | unit of radiation exposure/intensity |
| Gray (Gy) | unit of radiation absorbed dose |
| Sievert (Sv) | unit of occupational exposure and effective dose |
| Becquerel (Bq) | unit of radioactivity |
| Air kerma= | roentgen (R) x .01 |
| Gray= | rad x .01 |
| Sievert= | rem x .01 |
| Becquerel= | curie (Ci) x 3.7x10^10 |
Created by:
SCash21
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