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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