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Chapter 2 Bushong
Fundamentals of Radiologic Science
| Question | Answer |
|---|---|
| Length | The meter is based on the speed of light |
| Mass | The kilogram is a unit of mass |
| Time | The second(s) is based on the vibration of atoms of cesium |
| Velocity Equation | V=d/t |
| Acceleration | The rate of change of velocity with time |
| Acceleration equation | -A=Vf-Vo/T...unit is meters per second squared |
| Newtons 1st law | Body at rest will stay at rest, a body in motion will stay in motion until acted on by an outside force |
| Newtons 2nd law | The force applied to move an object is equal to the mass of the object multiplied by the acceleration |
| Force equation | F=ma |
| Newtons 3rd law | For every action there is an equal but opposite reaction |
| Weight formula | Wt=mg |
| Weight is... | the product of mass and the accerleration of gravity on earth is measured in newtons. |
| Momentum | The prodcut of mass and velocity. Total momentum b4 an interaction is equal to the total momentum after the interaction |
| Momentum equation | -P=mv |
| Work | Product of force and distance. W=fd. Unit Joule |
| Power | is the rate of doing work. The quotient of work by time |
| Power equation | P=work/t=Fd/t. Unit J/s |
| Energy | Ability to do work. Energy can be changed from 1 form to another but it cannot be created nor destroyed |
| KE equation | KE=1/2xmv2 |
| Potential energy | PE=mgh. h is the distance above the earths surface |
| Heat | form or energy, its the KE of the random motion of molecules. Unit of heat is a calorie |
| Kelvin | The scientific scaled based on absolute 0 |
| Conduction | Transfer of heat by a material or touching |
| Convection | The mechanical transfer of Hot molecules in a gas or liquid form from 1 place to another |
| Radiation | The transfer of heat by the emission of infrared radiation |
| Celcius | Tc=5/9(Tf-32) |
| Fahrenheit | Tf=9/5Tc+32 |
| Kelvin | Tk=Tc+273 |
Created by:
rachelbeatty4
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