Helpful Physics/Chemistry Formulas
Here are a few Physics formulas that may help you get through Physics and/or Chemistry
Density
Density = mass/volume
Speed
Speed = Distance covered/elapsed time
Acceleration
a = (vf - vi)/(tf - ti)
a = average acceleration
vf = final velocity
vi = initial velocity
tf = final time
ti = initial time
Universal Gravitation
F = (G(m1)(m2))/d^2
F = force of attraction
m1 & m2 = masses of two bodies
d = distance between centers of m1 and m2
G = gravitational constant =
or
Work Done by a Force
work = force * distance
Power
Power = work / time
Kinetic Energy
KE = (mv^2)/2
KE = kinetic energy
m = mass
v = velocity
Specific Heat
Q = cmt
Q = quantity of heat
c = specific heat
m = mass
t = change in temperature
Electric Current
I = Q/t
I = current strength
Q = quantity of charge
t = time
Momentum
momentum = mass * velocity
Mass - Energy Equivalence
E = mc^2
E = energy in ergs
m = mass
c = speed of light = about 3.00 x 10^8
Power expended in electric appliance
P = IV
P = power in watts
I = current
V = voltage
Newton's second law of motion
force = mass * acceleration
Torque
T = Fh
T = torque
F = tangential force
h = distance from pivot point to point of application of force
Boyle's Law
p1V1 = p2V2
p1 = original pressure
p2 = new pressure
v1 = original volume
v2 = new volume
Wave equation
c = ln
c = speed of light = 3.00 x 10^8
n = frequency
l = wavelength
Illumination on a surface perpendicular to the luminous flux
E = I/r^2
E = illumination
I = intensity of source
R = distance from source to surface perpendicular to beam
Focal Length of Mirrors and Lenses
1/f = 1/do - 1/di
f = focal length
do = object distance
di = image distance
Images in mirrors and Lenses
hi/ho = di/do
hi = image height
ho = object height
di = image distance
do = object distance
Ohm's Law
V = IR
V = potential difference applied to ends
I = strength of current flowing in a conductor
R = resistance
Enjoy!
