General Equations and Symbols Flashcards
1
Q
Kinetic energy
A
Symbol = Ek
Unit = j (joule)
Equation Ek=1/2mv2
2
Q
Mass
A
M
Kg
3
Q
Velocity
A
V
M/s
V=s/t
4
Q
Elastic potential energy
A
Ee
J
Ee=1/2ke2
5
Q
Spring constant
A
k
N/m
k=F/e
6
Q
Extension
A
e
m
7
Q
Gravitational potential energy - g.p.e
A
Ep
J
Ep=mgh
8
Q
Change in thermal energy
A
🔼E
J
🔼E=mc🔼🚫
9
Q
Specific heat capacity
A
c
J/kgc
10
Q
Temperature change
A
🔼🚫
C
11
Q
Power
A
P W (watt) P=E/t or P=W/t P=VI P=I2R
12
Q
Time
A
t
s
13
Q
Efficiency
A
%
Energy out/ energy in
Power out/ power in
14
Q
Charge flow
A
Q
C coulomb
Q=It
15
Q
Current
A
I
A amps
I=Q/t
16
Q
Potential difference
A
V
V volts
V=IR
V=E/Q
17
Q
Resistance
A
R
♎️ ohm
R= V/I
18
Q
Energy
A
E
J
E= Pt
E= QV
19
Q
Density
A
🅿️
Kg/m3
🅿️=m/v
20
Q
Volume
A
V
m3
21
Q
Energy for a Change of state
A
E
J
E= ml
22
Q
Latent heat
A
L
J/kg
L=E/m
23
Q
Weight
A
W
N Newton’s
W= mg
24
Q
Gravitational field strength
A
G
N/kg
g= W/m
25
Q
Work done
A
g
N/kg
g=W/Fs
26
Q
Distance moved
A
s
m
27
Q
Force
A
F
N
F=ke
