# Ch 2 - Vanderschaff

 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+273F=9/5(C) + 32C=5/9 x (F-32) Physics Interactions of matter and energy in all their forms 3 basic quantities? MassLengthTime 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^2g=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 MagnitudeUnit What are Newton's laws of motion? 1.) Inertia2.) Force3.) 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? ConvectionalConductionRadiation (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)... AuthorAnonymous ID132098 Card SetCh 2 - Vanderschaff Descriptionch 2 material Updated2012-02-01T01:16:59Z Show Answers