Equations Flashcards
Equation for force?
Mass X acceleration
Equation for weight?
Mass X gravity
Equation for speed?
distance / time
Equation for momentum?
Mass X velocity
Equation for acceleration?
Change in velocity / time
Equation for power?
Current X voltage
Equation for charge?
Current X time
Equation for energy? (electricity)
Power X time
Equation for voltage?
Current X resistance, Power / current
Equation for density?
Mass / volume
Equation for pressure?
Force / area
Equation for pressure difference?
Height X density X gravity
Equation for work done?
Force X distance
Equation for efficiency?
Useful output / total input (x100)
Equation for orbital speed?
2(pi)r / time
Equation for GPE?
Mass X gravity X height
Equation for kinetic energy?
1/2 X mass X velocity^2
Equation using primary/secondary turns and primary/secondary voltage?
Primary turns / secondary turns = primary voltage / secondary voltage
Equation for transformers, using voltage and current?
Primary voltage X primary current = secondary voltage X secondary current
Equation for wave speed?
Frequency X wavelength
Equation for moments?
Force X distance from pivot
Equation for refractive index?
n = Sin(i) / sin(r)
Equation linking the critical angle and refractive index?
SinC = 1 / n
Equation for wave speed?
Frequency X wavelength
