Physics Equations Flashcards
(21 cards)
1
Q
Speed
A
S= d/t
2
Q
Acceleration
A
a = v - u / t
3
Q
Weight
A
W = mg
4
Q
Density
A
d = m/v
5
Q
Force
A
F = ma
F = kx
6
Q
Moments
A
M = F x D
7
Q
Kinetic energy
A
Ke = 1/2mv^2
8
Q
Gravitational potential energy
A
gpe = mgh
9
Q
Work done
A
W = Fd
10
Q
Transformers
A
Vp/Vs = Np/Ns. Vp * Ip = Vs * Is
P1V1 = P2V2
11
Q
Current
A
I = Q/t
12
Q
Frequency
A
F = 1/t
F = v /wavelength
13
Q
Pressure
A
P = F/A
14
Q
Power
A
P = W/t or P = E/T
P= I^2R
P = VI
15
Q
Energy
A
E = Vit
16
Q
Series and parallel resistance
A
Series = Rt : R1+R2
Parallel : 1/Rt = 1/R1 + 1/R2
17
Q
Efficiency
A
Efficiency = useful energy / power output X 100
power / energy input
18
Q
Refractive index
A
n = sin(i) / sin(r)
sinO = 1/n
n = c/v
19
Q
Resistance
A
R = V/I
R = L/A
20
Q
Voltage
A
V = E/Q
21
Q
Alpha and beta
A
Alpha : 4 2
Beta : 0 -1b
