Physics Formula Revision (Conditions highlighted in red) [Draft Ver]
Topic
Formula
Distance
Time
Displacement
s
;v
Velocity
Time
t
Diff. in Velocity
Acceleration
Time
Speed
2.1: Kinematics
SI unit
Distance (m)
Time (sec)
Final unit
m/s
Displacement (m)
Time (sec)
m/s
Velocity (m/s)
Time (sec)
m/s
Force (N)
Mass (kg)
2
Acceleration (m/s )
Mass (kg)
g = 10 N/kg
Mass (g/kg)
3
3
Volume (cm /m )
Newton (N)
2
Condition: Used only when acceleration is
constant.
2.2 Dynamics
Resultant Force Mass
F ma
W
2.3 Mass Weight
Density
2.4 Turning E ffect
of Forces
Acceleration
mg
m
;.
(Density)
V
Moments
Fd
Liquids: Pressure
h (m): Depth of Liquid
3
(kg/m ): Density of liquid
g: 10N/kg
P (Pa): Pressure
3
V (m ): Volume
N/m , Pa
F (N): Force
d (Perpendicular dist): m
m (kg): Mass
v (m/s): Velocity
J
m (kg): Mass
g: 10N/kg
h (m): Height
Energy change /Work done(J)
Time (s)
J
Theta: Unknown temperature
X0: “ice point”, X100: Steam pt
o
Q(heat energy) C
C: Heat capacity
J
Q mc
J
Q ml f
m: mass
c: Specific Heat Capacity
l f : Latent heat of fusion
Q mlv
l v : Latent heat of vapouris ation
J
f: Frequency
t (sec): Time
Hz
Area
h g
1 2
mv
2
P.E. Potential Energy mgh
K.E. Kinetic Energy
X P Power
f
4.2: Light
W or Energy change
Time
X X0
(For Celsius scale only)
X100 X0
3.1 Principles of
Thermomet ry
v
1
T
f
2
N/m , Pa
A
P1V1 P2V2
W (Work Done) Fd
4.1: General Wave
Properties
3
Newton met re
(Nm)
Gases (when temp. is constant)
3.2 Thermal
Properties of Matter
3
g/cm or kg/m
Force (N)
Perpendicular Distance (m)
Note: Perpendicular Distanc e is not always the length of the rod.
Force (N)
Force F
2
Solids: Pressure
Area (m )
2.5 Pressure
2.6 Energy, Work,
power
Newton (N)
2
NA
J
J/s, W (watt)
C
J
v (m/s): Velocity
m/s
(m): Wavelength
f(1/t): Frequency
n = refractive index (ratio)
NA. Ratio.
Snell’s Law:
o
i/r ( ): angle of
sin i
n
incidence/ refraction
sin r
*Set calculator in degree mode.
Condition: The angle of incidence must be in the less dense medium; angle r must be in the
denser medium.
Physics Formula Sheet – Version 1.
Copyright © 2010. All Rights Reserved. No part of this publication may be reproduced without permission from the author.
4.2: Light
5.1: Current
Electricity
c
v
Real depth
Apparent depth
c
sin 1 n
Q
t
I
Ht of image
Ht of object
W
Q
V
W
Q
Ohm’s Law: V IR
Condition: Only for ohmic conductors.
R
5.2: Practical
Electricity
5.3:
Electromagnetic
Induction
l
A
NA. Ratio.
I: Current (A)
Q: Charge (Columb)
t: Time (sec)
: E.m.f. (Volts – V)
W: Work done/energy of circuit (J)
Q: Charge (Columb)
V: Potential Diff. (V)
W: Work done/energy across
circuit component
Q: Amount of charge
R: Resistance ( )
Coloumb, C
o
V, J/C
V, J/C
V
m)
L: Length
A: Cross-sectional Area
I 2 RT
P VI
I2R
Ns
Np
c (m/s): Speed of light in vaccum
8
(3x10 m/s)
v (m/s): Speed of light in medium.
o
c ( ): Critical angle.
: Resistivity (
E VIt
Vs
Vp
n
V 2t
R
V2
R
J
P = Power
R = Resistance
Ip
Is
Physics Formula Sheet – Version 1.
Copyright © 2010. All Rights Reserved. No part of this publication may be reproduced without permission from the author.
W