l = h

     mv

l = h

      p

h = planck's constant in either js or eVs

energy

E = hf

E = pc

KE = 1/2 mv²

KE = qV_co

KE _max = hf _incident - w

Time ↓  Length ↓   Mass  ↑

√ (1 - v²/c²)

alpha             beta

gamma               positron

neutron            proton

a = ⁴₂He               b = ⁰_-1e

g = ⁰₀g                   b+ = ⁰₊₁e

          ¹₀n                     ¹₊₁p                    

t _1/2 = 0.693/k    or     k = 0.693/t_1/2

ln (N_o/N) = kt

N_o = initial amount

N = final amount

Energy

(SU)

E

Joules

J

Electronvolts

eV

Planck's constant

(SU)

h

6.63 x 10^-34 Js

4.14 x 10^-15 eVs

Frequency

(SU)

f

Hertz (cycle/sec)

Hz

Mass

(SU)

m

kilograms

kg

Speed of light

(SU)

c

3 x 10⁸ m/s

Velocity

(SU)

v

meter/second

m/s

Wavelength

(SU)

l

meter

m

Momentum

(SU)

Kinetic energy

(SU)

KE

Joules

J

Electronvolts

eV

Charge

(SU)

q

coulombs

C

Potential Difference

(SU)

V

Volts

V

Work Function

(SU)

w

Joules

J

Energy levels

(SU)

E

electronvolts

eV

Time

(SU)

t

seconds

s

Mass

(SU)

m

kilogram

kg

Length

(SU)

l

meters

m