2009SU112EqExam - PHYSICS 112 FINAL EXAM EQUATION SHEET...

PHYSICS 112
FINAL EXAM EQUATION SHEET
Constants k = 8.99 x 10
9
N
.
m
2
C
2
ε
o
= 8.85 x 10
-12
C
2
N
.
m
2
Force Magnitude F =
k |q
1
| |q
2
|
r
2
(force between point charges)
E Field E =
F
q
E =
k |q|
r
2
(point charge)
V = E d (parallel plates)
Work and Energy KE =
1
2
mv
2
W = Fs cos θ = Δ KE
W
NC
= Δ KE + Δ PE
W
E
= – Δ PE W
AB
= EPE
A
– EPE
B
=q ( V
A
– V
B
)
Potential PE = qV E
x
= – Δ V/ Δ x
V =
k Q
r
(point charge)
Capacitance q = CV
E
cap
=
1
2
CV
2
=
1
2
q
2
C
=
qV
2
C =
κε
o
A
d
(parallel plates)
Current I =
Δ q
Δ t
Resistance R =
V
I
R =
ρ L
A
ρ = ρ
o
[1 + α (T - T
o
)]
R
s
= R
1
+ R
2
+ ... (in series)
1
R
P
=
1
R
1
+
1
R
2
+ ... (in parallel)
Circuits V = IR
P = IV = I
2
R = V
2
/ R

PHYSICS 112
FINAL EXAM EQUATION SHEET
Magnetic Field : The magnetic field is a vector.
F = qvB sin θ
F = ILB sin θ
τ = NIAB sin φ ( NIA = magnetic moment)
B =
μ
o
I
2 π r