equstions Flashcards
kinetic energy equation
Ek = 1/2xmxv^2
Ek= 1/2 x mass x velocity^2
elastic potential energy equation
Ee = 1/2 x k x e^2
Ee= 1/2 x spring constant x extension^2
gravitational potential energy equation
Ep = mxgxh
Ep= mass x gravitational field strength x height
MCAT
change in thermal energy = mass x specific heat capacity x temp. change
equation for power
power = energy transferred/ time
or
power = work done/ time
efficiency equation
effieicency = useful output/ total input
equation for charge flow
Q = i x t
equation for potential difference/ voltage
V = i x r
power using p.d
power = potenetial difference x current
P = V x I
power using resistance
power = current^2 x resistance
P= I^2 R
energy transferred equation using charge flow
E = QxV
energy transferred equation using time
E = Pxt
Density equation
density = mass/volume
specific latent heat equation
E = mL
pressure in gases for a fixed mass of gas held at constant temp.
pressure x volume = constant
