Reading quiz
Which of the following is not a problem with the Rutherford
Model of the Atom?
A) Experiments on the scattering of alpha particles
B) Experiments measuring emission of EM waves
C) Experiments on the stability of atoms
D) Experiments on the el
Foundations of Modern Physics
Physics 2170
Homework 13
due Wednesday 12/9/15, 11:45 am
This homework is due at 11:45 in the box at the entrance of the homework help room. Homework can
additionally turned in directly to Prof. Hough in class for a 5 point p
Foundations of Modern Physics
Physics 2170
Homework 11
due Wednesday 11/18/15, 11:45 am
This homework is due at 11:45 in the box at the entrance of the homework help room. Homework can
additionally turned in directly to Prof. Hough in class for a 5 point
Foundations of Modern Physics
Physics 2170
Homework 5
due Wednesday 9/23/15
This homework is due at the 11:00 am sharp in the box at the entrance of the homework help room.
Late homework (e.g. 11:01) will not be accepted. Exceptions will only be made with
Exam 2 Closed book, one 8.5”111” cheat sheet, and
calculator.
Test time: 90 minutes
Please do not ogen the exam until Eon are askeg to.
I Your exam should have 3 pages, numbered Exam 2.1 thru Exam 2.8.
a This exam consists of 10 multiple choice questions
Student ID #
Exam 1 Closed book, one 3.5x11” cheat sheet, and
calculator.
Test time: 90 minutes
Please do not ern the exam until you are asked to.
I Your exam should have T pages. numbered Exam l.I thru Exam 1.8.
Ir This exam consists of It} muhiple choic
Physics 2170 NAM r-.: Lam/3
Student II) it
Final Exam: Closed book, one 8.5”xl 1” cheat sheet, and
calculator.
Test time: 2.5 hours
Please do not open the exam until vou are asked to.
0 Your exam should have l2 pages. numbered Exam FEJ Ihru Exam FEJZ.
Foundations of Modern Physics
Physics 2170
Homework 4
due Wednesday 9/16/15
This homework is due at the 11:00 am sharp in the box at the entrance of the homework help room.
Late homework (e.g. 11:01) will not be accepted. Exceptions will only be made with
Foundations of Modern Physics
Physics 2170
Homework 3
due Wednesday 9/9/15
This homework is due at the 11:00 am sharp in the box at the entrance of the homework help room.
Late homework (e.g. 11:01) will not be accepted. Exceptions will only be made with
Foundations of Modern Physics
Physics 2170
Homework 2
due Tuesday 9/1/15
This homework is due at the 11:00 am sharp in the box at the entrance of the homework help room.
Late homework (e.g. 11:01) will not be accepted. Exceptions will only be made with ap
Foundations of Modern Physics
Physics 2170
Homework 1
due Wednesday 8/26/15
This homework is due at the start of class Wednesday August 26th (in two days) at 12:00 sharp. If
preferred, you can put it into the box in the homework help room by 11:00 Wednesd
Spring 2009 Physics 2170 Exam 2 Formula Sheet
Kinetic energy: K = mv 2 /2 = p2 /2m
Photon energy: E = hf
Work function: minimum energy needed to eject an electron from a metal:
Photoelectric eect: Kmax = hf
de Broglie relations: p = h/ = hk and E = hf =
Spring 2009 Physics 2170 Final Exam Formula Sheet
Gamma: = 1/ 1 2
Time dilation: t = t0
Length contraction: L = L0 /
Lorentz transformations for frame S traveling at speed v with respect to frame S.
x = (x vt)
x = (x + vt )
y
= y
z
= z
t
y = y
z = z
2
t =
Phys2170, Homework 1
Zhaochuan Shen
(Dated: January 27, 2010)
PROBLEM 1: 1.20 FROM TZD
Basically, = 3.3 104 ,
t0 = t/ = t
(
)
1 2 t 1 2 /2
The approximation is valid, just because is much smaller than 1. Therefore, the loses amount is
t 2 /2 = 86400 (3.3
Foundations of Modern Physics
Physics 2170
Homework 12
due Wednesday 12/2/15, 11:45 am
This homework is due at 11:45 in the box at the entrance of the homework help room. Homework can
additionally turned in directly to Prof. Hough in class for a 5 point p
Clicker question
Are the allowed states of the finite
square well quantized?
A) No, because the wavefunction
doesnt have to be zero at x=a.
B) No, because the wavefunction
doesnt have to be zero at x=0.
C) Yes, because our results have to
give the infinit
Summary of our Wave Equation Solution
1. Found the general solution to the wave equation
or
2. Put solution into wave equation to get constraint
3. Have two independent functional
forms for two derivatives
n=1
4. Applied boundary conditions for
guitar str
Summary of our Wave Equation Solution
1. Found the general solution to the wave equation
or
2. Put solution into wave equation to get constraint
3. Have two independent functional
forms for two derivatives
n=1
4. Applied boundary conditions for
guitar str
Summary of our Wave Equation Solution
1. Found the general solution to the wave equation
or
2. Put solution into wave equation to get constraint
3. Have two independent functional
forms for two derivatives
n=1
4. Applied boundary conditions for
guitar str
Relativity
Classical or Newtonian
physics does a good job of
describing the behavior of
particles at low speeds.
But as speeds approach light
speed we must use The Special
Theory of Relativity proposed
by Einstein in 1905.
Classical physics represents
the
Reading quiz (do not discuss)
Which of the following is true (in a vacuum):
1) Massless particles go the speed of light, and
massive ones cant.
2) Massive particles cant go the speed of light,
but massless ones can go any speed.
3) All electromagentic rad
Foundations of Modern Physics
Physics 2170
Homework 6
due Wednesday 10/7/15
This homework is due at the 11:00 am sharp in the box at the entrance of the homework help room.
Late homework (e.g. 11:01) will not be accepted. Exceptions will only be made with
Foundations of Modern Physics
Physics 2170
Homework 7
due Wednesday 10/14/15
This homework is due at the 11:00 am sharp in the box at the entrance of the homework help room. Late
homework (e.g. 11:01) will not be accepted. Exceptions will only be made wit
IMPORTANT ANNOUNCEMENT
If you picked up a homework last week that
was a correction/late/had something weird
about it.
Please give it back the grades were not
entered into our spreadsheet.
Ill update D2L early next week with all
homework/clickers/exam g
Foundations of Modern Physics
Physics 2170
Homework 9
due Wednesday 10/28/15
This homework is due at the 11:45 am sharp in the box at the entrance of the homework help room. Late
homework (e.g. 11:46) left in the box will not be graded (0 points). Late ho
Two Fourier transforms
Mark Reeder
February 6, 2012
1
2
Fourier transform of e(x/a)
The (complex) Fourier transform F[f ] of a function f (x) is dened by
1
2
f (x)eix dx.
Our rst aim here is to derive the Fourier transform
2
a
= e(a/2) ,
2
2
F e(x/a)
(1)
Foundations of Modern Physics
Physics 2170
Homework 10
due Monday 11/2/15
Note, this homework is due on TUESDAY NOON.
This homework is due at the noon sharp in the box at the entrance of the homework help room. Late
homework will not be graded or accepted
Clicker question
For the case of the time-independent potential V(x),
what is the impact of the time dependent part of the
wave function on the probability density?
A) Gives a multiplicative factor of
B) Gives a multiplicative factor of
C) Gives a multipl
Reading question
When does an electric field exert a
force on a charge?
A. Always
B. Sometimes (changing field)
C. Sometimes (depends on the charge)
D. Sometimes (depends on many things)
E. Never
F. Something else
Announcements
Students with accommodatio