# Formulae

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```					                                   Citadel Physics Formulae
Mechanics:

vav=d/t   vav=vi+vf        a=vf - vi         d=vit + at2/2      vf2=vi2 + 2ad           F=ma
2             t
Fr=μFN    F=mv2/r          F=Gm1m2/r2         W=FdCos(θ)         Wex=ΔE         P = W/t   Wnet = Ek

Ep=mgh Ep = kx2/2 Ek=mv2/2                    p=mv       FΔt=mΔv       a = v2/r    τ=rFSin(θ)

l                m
T = 2         T = 2             F = - kx     g = GM/r2
g                k

Electricity and Magnetism:

F=KQ1Q2/r2            E=F/q        E=KQ/r2        V=W/q        I=Q/t             V=IR

R=ρl/A            RT=R1+R2+.. 1/RT=1/R1+1/R2+..                P=VI=I2R=V2/R

F=BIL             F=qvB V=NΔΦ/Δt                       Φ=BA            V=Blv

Vs/Vp=Ns/Np= Ip/Is             V = kQ/r

Waves, Sound & Light

v = f            f= 1/T           n = c/v             n1Sin(i) = n2Sin(R)

T
Sin(i)/Sin(R) = v1/v2 = 1/2              v=                        I = P/A


 = 10log(I/Io)            fL/fS = (v - vL)/(v – vS)           v = 331 + 0.60(T)

1/f = 1/do + 1/di          M = hi/ho         M = - di/do

Modern Physics:

Lo                   1
t=to     L=               =                          m=mo
                 v2
1 2
c

E=hf=hc/λ         p=h/λ     λ=h/mv           E=mc2=m0c2 + K.E.
t

N = No  
1 T1 / 2
hf=KEmax + Wo                c = λf           
2

Constants:
g = 9.81 m/s2
K = 9.00 X 109 Nm2/C2 (Coulomb's law constant)
C = 1 X 10-6 C
2  radians = 360 degrees
Charge on electron = -1.60 X 10-19 C
Charge on proton = 1.60 X 10-19 C
mass of proton = 1.67 X 10-27 kg = 1.007276 u
mass of electron(and positron) = 9.11 X 10-31 kg = 0.000549 u
mass of neutron = 1.008665 u
1 u = 931.5 MeV
1 Mev = 1.60 X 10-13 J
1 kwh = 3.60 X 106 J
c = 3.00 X 108 m/s
G = 6.67 X 10-11 Nm2/kg2 (Universal gravitation constant)
h = 6.63 X 10-34 J s (Planck's constant)

```
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