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
