Formulas Flashcards
(53 cards)
1
Q
Motion Equations
A
Vf= Vo + at X= xo + vot + 1/2at^2 v^2= vo^2 + 2aX
2
Q
Force or Natural Force
A
ma, mg
3
Q
Force of Friction (Ff)
A
ukFn
4
Q
Centripetal Acceleration and Force
A
Ac= v^2/r
FAc=mv^2/r
5
Q
Torque
A
= Fsin(ø)
6
Q
Momentum
A
p=mv
7
Q
Impulse
A
J= F∆t= ∆p
8
Q
Kinetic Energy
A
1/2mv^2
9
Q
Gravitational Potential Energy
A
U or PEg= mgh
10
Q
Work
A
w= Fdcosø
11
Q
Power
A
W/∆t
12
Q
Spring Force
A
-kx
13
Q
Potential Spring Energy
A
1/2kx^2
14
Q
Period of Spring
A
2π √m/k
15
Q
Period of Pendulum
A
2π √l/g
16
Q
Period
A
1/f (frequency)
17
Q
Force/Potential Energy of Universal Gravitation
A
-GM1m2/ r^2
18
Q
Force (Electricity)
A
kq1q2/ r^2
19
Q
Electric Field
A
F/q
20
Q
Potential Electric Energy
A
qV = kq1q2/ r
21
Q
Average Electrical Field
A
- v/d
22
Q
Voltage in Series
A
k ( q1/r1 + q2/r2 + …..)
23
Q
Capacitance
A
Q/V or vacuum permititivity x A/d
24
Q
Potential Capacitance
A
1/2QV= 1/2CV^2
25
Current
∆Q / T
26
Resistance
p (resistivity) x length / A (area)
27
Electric Potential/ Potential Difference (V)
V= IR
28
Power (electricity)
IV
29
Capacitance (in series and parallel circuit)
Cp= c1 + c2 + c3 ....
1/Cs= 1/c1 + 1/c2 + 1/c3 ...
30
Force of Magnetic Field ( 2 ways)
```
Fb= qvBsin ø
Fb= BI (length) sin ø
```
31
Magnetic Field
magnetic constant/2π x I/r
32
Magnetic Flux
BAcosø
33
Avg. Emf
change in magnetic flux / time
| or B x length x v
34
Density (fluid)
m/V
35
Pressure (liquid)
density (p) x gh
36
Force of Buoyancy
density x Vg
37
Rate of Heat Transfer
KE x Area x temp/ L (thicknesss)
38
Pressure
F/ A
39
Pressure x Volume (PV)
=nRT= NkbT
40
Average Molecular KE
= 3/2 Kb T
41
Work done on a System
-P∆V
42
Internal Energy
∆U= Q + W
43
Efficiency
e= W/ Qh
44
Atomic Energy
E= hf= pc
45
Kinetic Energy Max (Atomic)
KEmax= hf- ø (work function)
ø= Hft (ft= frequency threshold)
46
Brog. Wavelength
Wavelnght= h / p (momentum)
47
Energy (Atomic)
E= mc^2
48
Speed of Wave
v= f wavelength
49
Index of Refraction + Conservation
n= c/ v
n1sinø1 = n2sinø2
50
Critical Angle
sinøc= n2/n1
51
Focal Length Equation
1/ image distance + 1/object distance= 1/focal length
52
Magnification
-Image distance/ object distance or final/ intial height
53
dsinø = m x wavelength
yes
