1
Q
Speed
A
v = s/t
2
Q
Acceleration
A
a = Δv/t
3
Q
Weight
A
W = mg
4
Q
Charge
A
Q = It
5
Q
Wave speed
A
v = fƛ
6
Q
efficiency
A
useful energy output / total energy input * 100%
7
Q
density
A
ρ=m/v
8
Q
momentum
A
p=mv
9
Q
Work done
A
W=Fs
work done = energy transferred
10
Q
KE
A
(mv^2)/2
11
Q
GPE
A
mgh
12
Q
pressure
A
p=F/A
13
Q
∆pressure at depth
A
∆p=ρg∆h
14
Q
moment
A
moment=Fd(perpendicular distance from pivot)
15
Q
Voltage
A
V=IR
16
Q
Electrical Power
A
P= IV
17
Q
Power
A
P=E/t
18
Q
refractive index
A
n = sini/sinr
Physics IGCSE
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