mehta (snm425) Homework 4 erskine (58715) This printout should have 15 questions. Multiplechoice questions may continue on the next column or page nd all choices before answering. 001 10.0 points A
Shie, Gary Homework 18 Due: Oct 15 2004, 4:00 am Inst: Turner This printout should have 12 questions. Multiplechoice questions may continue on the next column or page nd all choices before answering
mehta (snm425) Homework 1 erskine (58715) This printout should have 21 questions. Multiplechoice questions may continue on the next column or page nd all choices before answering. 001 (part 1 of 3)
mehta (snm425) Homework 3 erskine (58715) This printout should have 19 questions. Multiplechoice questions may continue on the next column or page nd all choices before answering. 001 10.0 points Is
E & M  Basic Physical Concepts
Electric force and electric eld
Electric force between 2 point charges: F  = k 1r2 2 k = 8.987551787 109 N m2 /C2 1 12 C2 /N m2 0 = 4 k = 8.854187817 10 qp = qe = 1.6
Plancks Solution
Max Planck correctly predicted the wavelength distribution of the
radiated energy,
2 hc 2
R( , T ) = 5 hc / kT
1)
(e
c the speed of light
k Boltzmanns Constant
from thermodynamics
h
Version 001 Third midterm niu (57625)
This printout should have 29 questions.
Multiplechoice questions may continue on
the next column or page find all choices
before answering.
001 4.0 points
Three
Phy302L Course Organization
John Yeazell, [email protected]
Syllabus
First Homework Available on Quest.
Optional TA sessions will start next week.
Lab sessions will begin Wed. Jan. 22nd
Toda
MIDTERM 1
Friday 2/21 , 2 PM
In Class
Bring pencils, calculators (memory cleared)
One 8.5 x 11 handwritten formula
sheet (both sides)
Magnetic Force on Charge
r
r r
Fmagnetic = qv B
Electron charge =
Optional TA Sessions Start Next Week
6PM, 7PM, and 8PM, Thursdays in WEL 2.256
Undergrad TA: Austin King,
[email protected]
The Coulomb Force Law
1
=
=
4
0 = permittivity constant
r
+
+
2
F21
Force
Electric Potential Difference in a
Uniform Field
Electric potential electric potential energy per unit charge
U electric
U electric
= qV, V =
q
=
=
+
=
. , . , .
What happens to if it were
Midterm 3, Wed. 4/30
All homeworks since last Midterm
(Reflection & Refraction, Wave Optics,
and Quantum Atomic Nuclear)
Exercise
What determines what element an atom is?
A.
B.
C.
D.
E.
The number of
Extra Credit
The grade for Extra Credit Midterm 1 is
added to the semester average.
If you get a 100% on it, it is worth 2pts. A
75% is worth 1.5 pts., etc.
Due this Wednesday 2/24/14 at 11PM
A Lon
Homework Problem
In a Youngs doubleslit experiment using 163 nm light, a thin
piece of plexiglass of refractive index 1.6 covers one of the slits.
If the center point on the screen is a dark spot ins
A homework problem
Symbol
Lens Radii
(location of C)
Front
Back
,

+
= ( 1)
What is the focal length? How does it change if the lens if
flipped over?
Interference and Diffraction
17th Century
Optic
Midterm 3, Wed. 4/30
All homeworks since last Midterm
(Reflection & Refraction, Wave
Optics, and Quantum Atomic
Nuclear)
Generating power from Nuclear Fission.
Safety and Environmental Concerns
Dispos
Circularly polarized light
fast
slow
More than one lens?
Real image of first lens becomes the
object for the second lens
object
2
5
Assume both lenses have focal length of and object is 2 in
front of
Faradays Law
Lenzs rule
Induced current is in the direction needed to produce an induced
magnetic field that tries to stop the original change in the magnetic
field.
1
2
i
1  2
Magnet moving into loo
Resistors in Circuits
There are two basic ways of arranging resistors in a circuit
(series and parallel)
Many Resistors in Series
Equivalent resistance, REQ =R1 + R2+ R3+ RN
Many Resistors in Parallel
MIDTERM 1
Friday 2/21, 2PM
PAI 4.42
Bring pencils, calculators (memory cleared)
One 8.5 x 11 handwritten formula
sheet (both sides)
Circuits and Symbols
Electric circuits are portrayed with diagrams
Version 025 Second midterm niu (57625)
This printout should have 26 questions.
Multiplechoice questions may continue on
the next column or page find all choices
before answering.
001 4.0 points
The
A Homework Problem
What is the direction of the current
in the inner coil and the direction of
the Bfield due to this current?
What is the direction of the induced Bfield due to the outer coil?
What
Two Bulbs Near a Solenoid
Add a thick wire:
I1
Loop 1
Loop 1: emf R1 I1 R2 I 2 = 0
Loop 2: R2 I 2 = 0
I2 = 0
I2
Node:
I1 = I 2 + I 3
emf
I1 =
R1
I1 = I 3
Loop 2
I3
Exercise
Current in RL Circuit
R
t
Optional TA Sessions Start THIS Week
6PM, 7PM, and 8PM, Thursdays in WEL 2.256
Undergrad TA: Austin King, [email protected]
Grad TA: Anindya Dey
[email protected]
Office Hours: Friday 35pm at
Midterm 2, Wed. 3/26
Covers homeworks: Magnetic Force and Fields,
Induced Currents, AC Circuits and EM Waves
Bring calculators, pencils, handwritten formula sheet 8.5
x 11
A homework problem
What is
Electric Potential Energy of Two Particles
q2
1 q1q2
U el =
(joules)
4 0 r12
q1
Uel > 0 for two likesign charges
(repulsion)
q2
q1
Uel < 0 for two unlikesign
Charges (attraction)
Electric Potential
Midterm 2, Wed. 3/26
Covers homeworks: Magnetic Force and Fields,
Induced Currents, AC Circuits and EM Waves
Bring calculators, pencils, handwritten formula sheet 8.5
x 11
Review on Monday bring qu
Maxwells Equations
They describe all electromagnetic fields in the universe,
outside the realm of quantum physics.
Fields Without Charges (in Vacuum)
Time varying magnetic field makes electric field
T
MIDTERM 1
Friday 2/21 , 2 PM
In Class
Bring pencils, calculators (memory cleared)
One 8.5 x 11 handwritten formula
sheet (both sides)
The Magnetic Effects of Currents
Make electric circuit:
What is th
Series resistance, REQ =R1 + R2+ R3+ RN
Coulombs Law
Electric field of
q
inside
Capacitance
U electric = qV, V =
0
surface
Kirchoff node rule: currents into/out of node
sum to zero
surface
r
E n A =