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52 Cards in this Set
- Front
- Back
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SI unit for work
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Joule (J)
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Formula for work
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W=Fd
Wok = Force x distance |
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Formula for weight
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Wt = mg
Weight = mass x gravity |
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SI unit for acceleration
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m/s2
Meter per second squared |
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Celsius conversion formula
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C = 5/9 (Tf-32)
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Acceleration due to gravity on earth
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9.8 m/s2 (meters per second squared)
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Acceleration due to gravity on the moon
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1.6 m/s2 (meters per second squared)
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SI unit of power
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joule/second (J/s)
and is called the Watt (W) |
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Formula for power
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P = Work/t = Fd/T
Power = Work/time = Force x distance/t |
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1 kw =
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1000 W
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Kelvin (k)
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Tk = Tc + 273
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Fahrenheit (F)
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Tf = 9/5 Tc + 32
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SI unit for weight
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Newton
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1 lb = ? N (newtons)
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4.5 N
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Formula for average velocity
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V = Vo + Vf / 2
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Acceleration formula
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A = Vf - Vo / t
a=acceleration Vf = final velocity Vo = Initial velocity t = time |
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1 yard = ? meters (m)
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0.9144 meter (m)
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1 inch = ?cm
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2.54 cm
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1 inch = ? meters
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0.0254 meters (m)
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1 meter (m)
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Based on the wavelength of orange light emitted from an isotope of krypton and is the distance traveled by light in 1/299,792,468 second
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CGS system
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Centimeters, grams, seconds
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SI unit for energy
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Joule (J)
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Momentum formula
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p=mv
p = mass x velocity |
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1 mile = ? meter
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1609 meters
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Velocity of light/x-rays
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C= 3 x 10(8) m/s
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Velocity formula
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V = d/t
Velocity = distance x time |
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Magnification formula
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SID/SOD
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SI unit for velocity
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m/s
meters per second |
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SI unit of force
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Newton (N)
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MKS system
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Meters, kilograms, seconds
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Formula for force
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f = ma
force = mass x acceleration |
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1 lb = ?kg
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0.45 kg
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1 lb = ?N
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4.5 N
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The standard unit of length
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Meter
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The standard unit of mass
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Kilogram
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The standard unit of mass (kg) is based on ..........
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The mass of 1000cm(3) of water at 4 degrees celsius
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Standard unit of time
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The second (s)
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Mechanics deals with ????
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Objects at rest (static)
& Objects in motion (dynamics) |
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Inertia
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A body will remain at rest or continue to move with constant velocity in a straight line unless acted on by an external force - Newton's first law
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Force
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The force (f) acting on an object with acceleration (a) is equal to the mass (m) multiplied by the acceleration (a) - F=ma - Newtons second law
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Action/Reaction
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For every action there is an equal and opposite reaction - Newton's third law
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2 types of mechanical energy used in radiologic science
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Kinetic energy (KE)
Potential energy (PE) |
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Kinetic Energy
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The energy associated with the motion of an object and depends on the mass of the object and on the square of its velocity
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Unit of heat
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The calorie
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Definition of calorie
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The heat necessary to raise the temperature of 1g of water to 1 degree Celsius
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Heat is transferred 3 ways
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Conduction
Convection Radiation |
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Objects in motion can be described by 2 terms
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Velocity
Acceleration |
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The velocity of X-rays is ???
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3 x 10(8) m/s
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The standard unit of length (m) is based on the speed of light
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It is based on the wavelength of orange light emitted from an isotope of krypton and is the distance traveled by light in 1/299,792,468 second
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The standard unit of time, second (s), is based on ???
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The vibration of atoms of cesium
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2 parts of every measurement
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Magnitude
Unit |
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The standard unit of length, meter (m), is accepted to be ........
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The distance between two lines engraved on a platinum-iridium bar kept at the International Bureau of Weights and Measures in Paris, France
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