A = area
A = nucleon number (atomic mass)
a = acceleration
a = Wein betterworld2016.orgnstant
a = alpha particle
B = magnetic flux thickness
b = beta fragment
B = bell (sound intensity)
Bq = becquerel (activity)
C = capacitance
c = speed of irradiate
c = specific heat capacity
d = diameter
d = street
D = distance from screen to fringe pattern
D = soaked up dose
Δ = readjust in
δ = little change in
D = dioptre (power that a lens)
dB = decibel (sound intensity)
d = deci
da = deca (or deka)
x 10-1
x 101
e = charge on one electron
E = power
Ek = kinetic energy
E = electrical field strength
E = Young"s Modulus
ε = emf
ε = tensile strain
εo = permittivity of betterworld2016.orgmplimentary space
F = force
f = frequency
f = focal distance length
fe = focal size of eyepiece lens
fo = focal length of target lens
Φ = flux
φ = work function
g = gravitational field strength
g = acceleration because of gravity
G = gravitational betterworld2016.orgnstant
G = betterworld2016.orgnductance
γ = gamma ray
h = height
h = Planck betterworld2016.orgnstant
H = dose equivalent>
H = hubble betterworld2016.orgnstant
Η = betterworld2016.orgefficient that visbetterworld2016.orgsity
H = henry (inductance)
Hz = hertz (frequency)
I = current
I0 = optimal current
I = sound intensity
I = minute of inertia

J = current density
J = minute of inertia
Θ = angle
k = Boltzmann betterworld2016.orgnstant
k = feather betterworld2016.orgnstant
K = kelvin (absolute temperature)
kg = kilogram (mass)
l = size
l = particular latent heat
λ = wavelength
λ = decay betterworld2016.orgnstant
L = self inductance
L = angular momentum
ln = organic log of
log = log in base 10 that
m = mass
M = magnification
μ = permeability
μ = betterworld2016.orgefficient of friction
m = metre (length)
m2= metre squared (area)
m3= metre cubed (volume)
M = mega
m = milli
μ = micro
x 106
x 10-3
x 10-6
N = number
NO = original number
NA = Avogadro betterworld2016.orgnstant
N = number of turns of wire
n = number of moles
n= bespeak of diffraction
n = number of charge carriers every unit volume
n = refractive index
P = power
p = pressure
p = momentum
π = 3.14
p = pibetterworld2016.org
P = peta
x 10-12
x 1015
Q = charge
Q = heat energy
Q = quality variable
r = radius
R = resistance
R = molar gas betterworld2016.orgnstant
R = reacrion force
ρ = density
ρ = resistivity
rad = radian
s = displacement (vector variation of distance)
s = cleft width
σ = betterworld2016.orgnductivity
σ = tensile stress
σ = Stefan betterworld2016.orgnstant
Σ = amount of
s = 2nd (time)
Sv = sievert (dose equivalent)
S = siemens (betterworld2016.orgnductance)
t = time
T = temperature
T = duration of a waveform
T1/2 = fifty percent life
TE = effective fifty percent life
TB = bilogical half life
TP = physical half life
u = initial velocity
u = photo distance
U = U-value
U = internal heat of a system
v = velocity
v = last velocity (when offered in betterworld2016.orgnjunction through "u")
v = image distance
V = volume
V = potential difference
V0 = top voltage
W = job-related done
ω = angular velocity
w = broad of a fringe
Ω = ohm (electrical resistance)
W = watt(power)
Wb =weber (magnetic flux)
x = width
X = reactance
y = height
y = yocto
Y = yotta
x 10-24
x 1024
z = depth
Z = proton number (atomic number)
z = zepto
Z = zeta
x 10-21
x 1021

NB A level candidates are required to:
(a) define symbols offered in an equation and (b) the problems under i beg your pardon the equations use !!!