Physics Regents

Vectors

Displacement, velocity, acceleration, force, momentum, impluse, fields... Anything else is scalar

Velocity

m/s

Acceleration

m/s^2

Force

N

Momentum and impulse

kg m/s

Work, heat and energy

J

Voltage

V

Electric field

N/C

Frequency

Hz

Period

s

Volts

V=J/C

Amps

A=C/s

Resistance

Ohms=V/A

Coulombs

C

Joules

J=NM

Vertical height of thrown object

d = 1/2 g t^2

Sticky collision

m1v1+m2v2=(m1+m2)vf

Bouncy collision

m1v1 + m2v2 = equals on other side

Amplitude (sound)

Loudness

Frequency

Pitch

elementary charge (e)

1.6 x 10^-19 C

1 electronvolt (eV)

1.6 x 10^-19 J

centi

10^-2

milli

10^-3

mega

10^6

E

electric field strength

I

current

P

power

W

work

q

charge

wave velocity equation

v = f λ

period of wave

T = 1/f

change in velocity given time

vf = vi + at

change in distance given acceleration

d = vit + at2

change in velocity given distance

vf^2 = vi^2 + 2ad

impulse equation

J = Fnet t

potential energy spring

PEs = 1/2 kx^2

potential energy

∆PE = mg∆h

centripetal acceleration

ac =v^2/r

momentum equation

p = mv

kinetic energy equation

KE = 1/2 mv^2

work equation

W = Fd

power equation

P = W/t = Fd/t

force of friction equation

Ff = µFN

force given mass and acceleration

f = ma

voltage in series

add up across resistors

voltage in parallel

equal everywhere

current in series

equal everywhere

current in parallel

add up for each circuit

resistance in series

add up each resistor

resistance in parallel

gets smaller with each circuit

potential difference

voltage

electrostatic force

Fe

electric motor

electric -> mechanical

internal energy

thermal (heat)

equilibrium

all forces are equal

object is accelerating

unequal forces

Doppler effect

frequency change due to moving object

resonance

objects vibrate at their natural frequency

longitudinal wave

particles move parallel to wave motion

transverse wave

particles move perpendicular to wave motion

inertia

increases with mass

constructive interference

wave amplitudes add together

destructive interference

wave amplitudes subtract

order of magnitude

10^x

magnitude

amount

mechanical energy

total energy

moving charged particles

produce magnetic field

Fg

force of gravity

constant speed

all forces are equal

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