Equations Flashcards
Relationship between average speed, distance moves and time taken
Average speed= distance moved/Time taken
Acceleration, change in velocity and time taken
Acceleration= change in velocity/time taken
Force,mass and acceleration
Force= Mass x acceleration
Weight, mass and g
Weight= mass x g
Momentum, mass and velocity
Momentum= mass x velocity
Force, change in momentum and time taken
Force= change in momentum/ time taken
Moment, force and perpendicular distance from the pivot
Moment= force x perpendicular distance from pivot
Power, current and voltage
Power= current x voltage
Energy transferred, current, voltage and time
Energy transferred= current x voltage x time
Voltage, current and resistance
Voltage= current x resistance
Charge, current and time
Charge= current x time
Energy transferred, charge and voltage
Energy transferred= charge x voltage
Density, mass and volume
Density= mass/ volume
Work done, force and distance moved
Work done= force x distance moved
Energy transferred and work done
Energy transferred= work done
Kinetic energy, mass and speed
1/2 x mass x (speed)2
GPE, mass, g and height
GPE= mass x g x height
Pressure,force and area
Pressure= force/ area
Wave speed, frequency and wavelength
Wave speed= frequency x wavelength
Turns and voltage for a transformer
Input voltage/output voltage= primary turns/ secondary turns
Refractive index, angle of incidence and angle of refraction
n= sin i/ sin r
Refractive index and critical angle
Sin c= 1/n
Efficiency
Efficiency= useful energy output/ total energy output x 100%
Pressure difference
Pressure difference= height x density x gravitational field strength
