Genesee Community College - PHY 133 Physics With Calculus 3
Spring 2015
SYLLABUS
INSTRUCTOR: Mike Crittenden, phone 343-0055 ext. 6397, e-mail macrittenden@genesee.edu
OFFICE HOURS: MWF 9:00 – 10:00, Tu & Th 11:00 – 12:00
(Available at other times also. Feel free to walk into a lab.)
OFFICE: D369 (I may sometimes spend my office hours in the lab, B202).
TEXT: Serway & Jewett, Physics for Scientists and Engineers with Modern Physics, 9th ed., “Hybrid
Edition” (Much less expensive older editions are organized a little differently, but otherwise just as good.)
CALCULATOR with trig functions: Also required.
Optional: Study guide. Shows how to solve many problems.
Anticipated Schedule:
M 1/12 lecture on sec. 1
Th 2/19 no lab
(F 4/3 No class: Good Friday)
W 1/14 lecture on sec. 1
F 2/20 quiz 5, more 6
M 4/6 start 11
Th 1/15 lab 1
M 2/23 more 6
W 4/8 quiz 10, more 11
F 1/16 finish 1, start 2
W 2/25 finish sec. 6, start 7
Th 4/9 lab 10
(M 1/19/15 No class: MLK Day) Th 2/26 lab 6A
F 4/10 more 11
W 1/21 quiz 1, more sec. 2
F 2/27 quiz 6, more 7
M 4/13 finish 11, start 12
Th 1/22 lab 2
M 3/2 finish sec. 7
W 4/15 quiz 11, more 12
F 1/23 more sec. 2
W 3/4 start 8
Th 4/16 lab 11
M 1/26 finish 2, start sec. 3
Th 3/5 lab 6B
F 4/17 finish 12, start 13
W 1/28 quiz 2, more sec. 3
F 3/6 quiz 7, more 8
M 4/20 more 13
Th 1/29 lab 3
(Spring Break: March 9-13)
W 4/22 quiz 12, review 9-12
F 1/30 finish sec. 3, start 4
M 3/16 finish 8, start 9
Th 4/23 lab 12
M 2/2 quiz 3, more sec. 4
W 3/18 review 5-8
F 4/24 Exam 3 (sec 9-12)
W 2/4 finish sec. 4
Th 3/19 lab 7
M 4/27 more 13
Th 2/5 lab 4
F 3/20 quiz 8, more 9
W 4/29 finish 13, start 14
F 2/6 start sec. 5
M 3/23 Exam 2 (sec. 5-8)
Th 4/30 lab 13
M 2/9 quiz 4, review sec. 1-4 W 3/25 more 9
F 5/1 quiz 13, more 14
W 2/11 Exam 1(sec 1-4)
Th 3/26 lab 8
M 5/4 more 14
Th 2/12 lab 5
F 3/27 finish 9, start 10
W 5/6 finish 14, review
F 2/13 more 5
M 3/30 quiz 9, more 10
Th 5/7 Retests
(M 2/16 No class: Pres. Day)
W 4/1 finish 10
F 5/8 quiz 14, review
W 2/18 finish 5, start 6
Th 4/2 lab 9
Final Exam (sec 1-14): May 11, 12, or 13. The exact time will be announced when I know it.
(Students with accommodations are expected to take quizzes & exams the same day as everyone else.)
GRADING SYSTEM/COURSE REQUIREMENTS:
You must earn at least two thirds of the possible lab points or you will receive an F for the course,
regardless of your test scores. (94 out of 140, if we do the usual 14 labs, which means you fail if you
miss more than four labs.) Otherwise, your grade is determined as follows. (You can keep track of
your grades below. Keep graded papers in case you find an error in my records.)
-2Quizzes (10 pt each):___+___+___+___+___+___+___+___+___+___+___+___+___+___ = ____
Labs (10 pt each):___+___+___+___+___+___+___+___+___+___+___+___+___+___ = ____
Exams 1, 2 & 3 (100 pts each): _____ + _____ + _____ = ____
Final Exam (175 pts): ____
Total: ____
No grades are dropped, except when replaced by a retest. No extra credit.
A: 89% - 100% (672 - 755 points)
B: 78% - 89% (589 - 671)
C: 67% - 78% (506 - 588)
D: 56% - 67% (423 - 505)
F: 0 - 56% (0 - 422)
I might move the cuts between letter grades down a little (improving borderline grades) based on
effort and the difficulty the tests. If a lab or test has to be canceled, the same percents will apply to the
smaller number of possible points.
To estimate your grade before the course is over:
(1.85)(quiz total so far)/(number of quizzes so far) = ______
(1.85)(lab total so far)/(number of labs so far)
= ______
(.630)(exam total so far)/(number of exams so far) = ______
Total:
______%
(Some people vary a lot between exams, so early in the course this estimate would be very crude.)
With nearly perfect lab grades, which most people have, roughly 50% is the minimum needed on
quizzes and exams to pass with a D. Low 60's for a C, mid 70's for a B, upper 80's for an A. (The idea
is that "B" means "above average;" about half of a typical class scores above 75% on a typical test.)
Other grades:
W: To withdraw, contact the records office by the ninth week. W's cannot be issued by faculty.
IP: Contact me by the day after the final. As with any time extension, you need a legitimate reason.
Retests:
I do not drop any grades; instead, you can take another test on the same material. The better of the
two grades counts. Making up a test you missed counts as a retest unless I agree otherwise.
You may take retake a maximum of five quizzes, within 1 week of the original, but not after the final
exam. You may take one of the 100 point exams over, on the date in the schedule above. A retest
gets "used up" even if it does not improve your grade. There are no retests on the final.
COURSE DESCRIPTION:
Catalog description: Introduces waves, standing waves, optics, interference and diffraction,
electromagnetic waves, special relativity, wave-particle duality, the Bohr atom, wave functions,
-3Schrodinger's equation and hydrogen, molecules, solids, radioactivity and nuclear physics, and
elementary particles. Three class hours, three lab hours. Spring only.
Prerequisite or corequisite: PHY 132.
Student Learning Outcomes:
Upon successful completion of the course, students will be able to demonstrate
*1. The ability to explore natural phenomena using scientific methods, in the course's laboratory.
"Natural phenomena" means actual physical processes taking place live, as opposed to videos or
simulations. "Laboratory" means an appropriate facility containing necessary equipment, as
defined by the list included in the Course Outline. For a minimum of ten of the three-hour labs,
students must measure something real, in the presence of the instructor.
Students must submit lab reports worth at least two thirds of the possible lab points to receive
credit for the course.
*2. The ability to apply data, concepts, and models in the field of physics, as documented by
performance on quizzes, exams and the comprehensive departmental final. These tests contain both
conceptual questions and quantitative problems, with the emphasis on quantitative problems.
Partial credit will be given based on how closely a student's solution resembles a correct one. The
following will be demonstrated:
a. fluency in the course's prerequisite mathematics.
b. the ability to interpret graphs.
c. consistent use of units.
d. the ability to apply the meaning of terminology verbally.
e. the ability to apply the meaning of terminology in solving problems.
f. the ability to apply basic physical principles verbally.
g. the ability to apply basic physical principles in solving problems.
h. the ability to do the above in the context of a variety of topics, as listed in the course's content
outline.
3. Critical thinking (reasoning) ability as documented by solving exam problems which are not
identical to others they have seen before, and whose solution involves two or more steps. This
includes
a. problems in which one equation must be used to find something needed in another. These
equations may be algebraic, involve trigonometric or logarithmic functions, or involve calculus.
b. problems involving the manipulation of vectors in a plane.
c. problems which involve setting up an integral.
They must show, in written form, how they have done this; that is, present a well-reasoned
argument for their answer.
* This course objective has been identified as a student learning outcome that must be formally assessed as part of the
Comprehensive Assessment Plan of the college. All faculty teaching this course must collect the required data and
submit the required analysis and documentation at the conclusion of the semester to the Office of Institutional
Research and Assessment.
-4RULES & POLICIES:
Attendance is only monitored so I can report it to others, not for any purpose of my own. (I’m here to
judge how good you are at physics, not to be your mother. Keep in mind that people who don't come
to class often get low grades because they don't learn much.)
Missing a quiz or exam: If possible, contact me on or before the day of the test. You will probably
need to document the fact that missing the test was beyond your control. (Paperwork from your
medical treatment, the receipt for your car’s repairs or parts, the police report … ) If you’re sick for a
quiz but not sick enough to see a doctor, just take the retest. If this happens for a big test, discuss it
with me. If it’s a day or two after the test, you will need to explain why you couldn’t contact me
sooner. I try to be reasonable; however, the final judgment as to what is reasonable is mine, and I may
reject any undocumented excuse. If I do, the zero can be raised by a retest the same as any other
grade. Don’t miss the Final without a good reason.
Missed or late labs: Labs are due when you leave the laboratory; get written permission to finish one
at home. I do not accept late papers without a reason; "I forgot to bring it" will work a few times.
Make a missed lab up within one week of the scheduled date, unless you have a documented hardship.
Behavior: If I feel you are unacceptably offensive or distracting, I may deny you permission to be in
class for however long seems appropriate to me. This includes possible expulsion from the course,
with zeros on all remaining work. I've never had to do this; let's keep it that way. For more
information on behavior, put “student code of conduct” in the search box at genesee.edu.
Plagiarism and Cheating: Cheating is obtaining or intentionally giving unauthorized information to
create an unfair advantage in an examination, assignment, or classroom situation. Plagiarism is the
act of presenting and claiming words, ideas, data, programming code or creations of others as one’s
own. Plagiarism may be intentional – as in a false claim of authorship – or unintentional – as in a
failure to document information sources using MLA (Modern Language Association), APA
(American Psychological Association) or other style sheets or manuals adopted by instructors at the
College. Presenting ideas in the exact or near exact wording as found in source material constitutes
plagiarism, as does patching together paraphrased statements without in-text citation. Disciplinary
action may include a failing grade on an assignment or test, a failing grade for the course, suspension
or expulsion from the college, as described in the Code of Conduct.
If you cheat on an exam or its retest, you get a zero on that exam (not the higher of the two scores). If
you cheat on a quiz or its retest, your grade is negative 70 for that quiz, to make a similar effect to a 0
on an exam. Cheating on a lab (handing in a lab you did not participate in by fabricating or copying
data) gets you a zero on that lab. I will notify the Dean of Students of any such incidents, which will
lead to more severe penalties if you have a previous history of dishonesty.
Punctuality: If you are late for a quiz or exam, your paper will be collected when everyone else's is,
unless you offer a reasonable explanation. If you arrive over 15 minutes after the class has started a
lab, you will have to make it up, within one week.
-5Storm cancellation policy: If the college is open, I will almost certainly hold class. Use your
judgment as to whether you come. If driving seems unsafe to you, don't. I consider a storm to be a
legitimate excuse like being sick.
TIPS ON STUDYING & WHAT TO EXPECT FROM THE COURSE:
In class: Take good notes. A lot of this material will not stick to you the first time you hear it. You
need something to refer to as you do the homework. If following the lectures is hard, do the reading
before I go over it so you have an idea of what I’m talking about.
At home each week: It’s more important to practice solving problems than to read the text over and
over. Work on the homework until you can put the solutions on blank paper, just like during the quiz.
Once you can do it at home, you can do the exact same thing in class. (Unless you have some issues
with test taking. Go to the CAP center for help in that case.) If you need more practice than just the
homework, go over the sample problems from the notes and text: cover up the solutions, try them, and
then compare. There are also many worked out problems in the study guide.
For the monthly exams (and final): Cramming a month of material into your head in one night isn't
going to work. But, if you've been preparing properly each week, you may only need to refresh your
memory by reading back through your notes. If there are areas where you do not feel confident,
practice by solving problems. Doing new ones is better than the same old ones over again.
This is a fairly demanding course that needs to be taken seriously. Expect to follow the 2 to 1 rule
(two hours outside of class per credit, meaning 8 hours per week for this course). If you aren’t willing
to do the necessary work, others sitting near you are, and they will be the ones getting what you had in
mind for yourself. So make up your mind to come to class, do the homework and study. Don’t be
intimidated: Most people have the ability to succeed. It’s just a matter of time and effort. You don't
get good at a sport or a musical instrument without practicing; the same is true here. And who knows?
You may even discover that the mathematical description of nature can be an interesting subject.
SUPPORT SERVICES: If you need any sort of help, please ask me for it; repeatedly if necessary. A
tutor is usually available. Ask me or at the C.A.P. to find out.
NEED A JOB? If you, or someone you know, want minimum - wage work in the science labs, there are
sometimes unfilled positions for student assistants. See me to find out.
-6Assignments:
Solutions are on file at the library's circulation desk, and at
http://faculty.genesee.edu/macrittenden/phy133.htm
Avoid using them as a crutch; try to do it yourself first. If you don't spend two or three hours on an
assignment before deciding you need help, you're not making a serious attempt. Then, to find your
mistakes or resolve any questions, consult the solutions or see me.
Sec. 1 - Optics
Read: Ch. 35: sec. 3, 4, 5, & 8; Ch. 36: sec. 1, 2, & 4
Quiz A. 1. (5 points) Calculate the image position and magnification if an object is placed 20 cm in front
of a convex mirror of focal length –40 cm.
ans: (a) si = -13.3 cm, M = .667
2. (5) Use a ray diagram, not calculations, to find the image position if an object is placed 20 cm in front
of a concave mirror of focal length +30 cm.
ans: 60 cm behind the mirror.
Quiz B. 1. (5 points) A fish in a pond is located 15 m from shore. Above what depth would the fish be
unable to see a small stone at the water's edge?
ans: 13.2 m
2. (5) Use a ray diagram, not calculations, to find the image position if an object is placed 20 cm from a
convex lens of focal length 30 cm.
ans: 60 cm from the lens on the same side as the object.
C. 1. (5 points) A light ray initially in water enters a transparent substance at an angle of incidence of
37.0, and the transmitted ray is refracted at an angle of 25.0. Calculate the speed of light in the
transparent substance.
ans: 1.58x108 m/s
2. (5) Use a ray diagram, not calculations, to find the image position if an object is placed 40 cm from a
convex lens of focal length 30 cm.
ans: 120 cm from the lens on the opposite side from the object.
D. An object 1.0 cm in height is placed 4.0 cm to the left of a converging lens of focal length 8.0 cm. A
diverging lens of focal length -16 cm is located 6.0 cm to the right of the converging lens. Find the
position and size of the final image. Is it inverted or upright? Real or virtual?
ans: 7.47 cm left of the diverging lens, 1.07 cm tall, erect & virtual
-7E. 1. (2 pts.) Explain the difference between a real and a virtual image. (That is, what makes a real image
real and what makes a virtual image virtual.)
2. (8) A light ray of wavelength 589 nm is incident at an angle θ on the top surface
of a block of polystyrene as shown. Find the maximum angle θ for which the
refracted ray undergoes total internal reflection at the left vertical face of the block
if it is immersed in water.
ans: 30.3
F. 1. (3 points) As light travels from one medium into another, (a) Does the wavelength of the light
change? (b) Does the frequency change? (c) Does the speed change?
2. (7) A spherical mirror is to be used to form, on a screen 5.00 m from the object, an image five times the
size of the object. (a) What kind(s) of mirror could be used: plane, concave or convex? (b) What should
its radius of curvature be? (c) Where should the mirror be positioned relative to the object?
ans: Concave mirror, 2.08 m radius of curvature, 1.25 m from the object.
Sec. 2 - Superposition and Standing Waves
Read: Ch. 18, sec 1 – 5, 7 & 8
A. 1. (2 points) A piano plays a note, then a horn plays the same note at the same loudness. What is the
difference between these sound waves? (That is, what is the physical difference between sounds of
different quality?)
2. (8) (a) Calculate the length of a pipe that has a fundamental frequency of 240 Hz if the pipe is closed at
one end and open at the other. (b) What is its next resonant frequency above the fundamental?
ans: .357 m, 720 Hz
B. 1. (2 pts) How does moving the slide on a trombone change the frequency produced?
2. (8) (a) Calculate the length of a pipe that has a fundamental frequency of 240 Hz if the pipe is open at
both ends. (b) What is its next resonant frequency above the fundamental?
ans: .715 m, 480 Hz
C. A 60.0 cm guitar string under a tension of 50.0 N has a mass per unit length of .0100 kg/m. What is the
highest resonance frequency of the string that can be heard by a person able to hear frequencies up to 20
000 Hz?
ans: 19 976 Hz
-8D. The wave function for a standing wave in a string is
y = (.30 m)sin(.25x)cos(120πt), where x is in meters and t is in seconds. Determine the (a) wavelength of
the interfering traveling waves, (b) frequency, (c) period, (d) distance between nodes, (e) distance from
node to antinode, (f) amplitude at the antinodes, and (g) speed of the interfering traveling waves.
Ans: 25.1 m, 60.0 Hz, 16.7 ms, 12.6 m, 6.28 m, .3 m, 1510 m/s
E. 1. (2 pts) Some singers claim to be able to shatter a wine glass by loudly singing a certain pitch for
several seconds. What mechanism causes the glass to break?
2. (8) When you push the piano key for 110 Hz, the hammer hits two side-by-side strings tuned to this
same note. (The extra string is to provide extra loudness.) If string 1 is at its normal tension of 600 N and
string 2 has slipped to 540 N, (a) Show that if f is frequency and F is tension,
√
. (b) What beat
frequency is heard?
ans: 5.64 beats/s
F. 1. (2) Explain how a musical instrument such as a piano may be tuned using beats.
2. (8) A standing wave is established in a 120 cm long string fixed at both ends. The string vibrates in
four segments when driven at 120 Hz. (a) Determine the wavelength. (b) What is the fundamental
frequency of the string?
ans: 60.0 cm, 30.0 Hz
Sec. 3 - Interference & Diffraction
Read: Ch. 35, sec 6, just p. 837; Ch. 37, sec. 1, 2, 4 & 5.
A. 1. (2 pts) As it evaporates, the thinnest spot on a soap bubble appears black just
before it breaks. Explain why a path difference of nearly zero gives destructive
instead of constructive interference in this case.
2. (8) Waves in a ripple tank travel from sources 8.00 cm apart to a
wall 14.0 cm from them. If the first order maxima hit the wall
directly in front of the sources, what is the wavelength? (Hint: The
wall is too close for mλ = d sinθ to be valid.)
ans: 2.12 cm
-9B. 1. (2 pts) What is the necessary condition on the path length difference between two waves that
interfere (a) constructively, and (b) destructively?
(Assume they stay in the same medium for the entire path, and undergo no reflections.)
2. (8) A thin film of refractive index 1.36 and thickness 7.0x10-5 cm is surrounded by air on both sides. A
beam of sunlight is incident on the top of the film normal to its surface. What wavelengths (as measured
in air) within the visible range, 400-700 nm, will the film strongly reflect? What frequencies?
ans: 544 nm & 423 nm, 551 THz & 709 THz
C. 1. (2 pts) An oil film on water appears brightest at the outer regions where it is thinnest. From this
information, what can you say about the index of refraction of oil relative to that of water?
2. (8) A pair of narrow parallel sits separated by .250 mm are illuminated by green light (λ = 546.1 nm).
The interference pattern is observed on a screen 1.20 m away from the plane of the slits. Calculate the
distance from the central maximum to the first bright region on either side.
ans: 2.62 mm
D. 1. (2 pts) If light from a red lamp passes through two slits, there is
an interference pattern beyond them. Why is there no interference
pattern if each slit has its own lamp?
2. (8) A material having an index of refraction of 1.30 is used to coat a
piece of glass (n = 1.50). What should be the minimum thickness of this film which minimizes reflection
of 500 nm light?
ans: 96.2 nm
E. Two speakers are driven by the same oscillator with a frequency
of 200 Hz. They are located 4.00 m apart on a vertical pole. A man
whose ears are level with the lower speaker walks straight toward it,
as shown.
(a) How many times will he hear a minimum in sound intensity?
(b) How far from the pole is he at these moments?
Ignore reflections from the ground.
ans: two, 8.90 m & 1.82 m
F. 541 nm light enters an aquarium full of water. Immersed in the water is a pair of slits 2.50 x
10-6 m apart. What is the angle for the second order maxima?
ans: 18.9°
Sec. 4 - More Interference. Polarization.
Read: Ch. 37, first third of sec. 6; Ch. 38, sec. 1, 2 through bottom of p. 909, 3 - 6.
A. 1. (6.5 pts) What is the minimum distance between two points which can be resolved 29 km away
using a telescope with a 4.00 cm diameter objective lens? (Assume λ = 580 nm.)
-10ans: 51.3 cm
2. (3.5) Light is reflected from a smooth ice surface, and the reflected ray is completely polarized.
Determine the angle of incidence. n = 1.309 for ice.
ans: 52.60
B. 1. (2 points) Certain sunglasses use a polarizing material to reduce the intensity of light reflected from
shiny surfaces. What orientation of polarization should the material have to be most effective?
2. (8) The second-order bright fringe in a single slit-diffraction pattern is 1.40 mm from the center of the
central maximum. The screen is 80.0 cm from a slit of width .800 mm. Calculate the wavelength.
ans: 560 nm
C. 1. (2 pts) Why can you hear around corners, but not see around corners?
2. (8) Three polarizing disks are parallel and centered on a common
axis. The direction of the transmission axis in each case is shown
relative to the vertical. A plane polarized beam of light with E0 vertical
is incident from the left with intensity Ii = 10.0 units. Calculate the
transmitted intensity If.
ans: 6.89 units
D. Light of wavelength 500 nm is incident normally on a diffraction grating. If the third order maximum
of the diffraction pattern is observed at 32.0, (a) what is the number of rulings per centimeter for the
grating? (b) Determine the total number of primary maxima that can be observed in this situation.
ans: 3.53 x 103, 11
E. 1. (2 pts) In class, I passed around a calcite crystal. If a dot on a page is viewed through it, you see
two dots. What is the difference between the light following one path through the crystal and the light
following the other?
2. (8) X-rays of wavelength 0.140 nm are reflected from a NaCl crystal, and the first order maximum
occurs at an angle of 14.4. What value does this give for the interplanar spacing of NaCl?
ans: .281 nm
F. One leg of a Michelson interferometer contains an evacuated cylinder 3.00 cm long having glass plates
on each end. A gas slowly leaks into the cylinder until a pressure of 1.00 atm is reached. If 35 bright
fringes pass on the screen when light of wavelength 633 nm is used, what is the index of refraction of the
gas to six places past the decimal?
ans: 1.000 369
Sec 5 - 14 will be handed out later. You can see them now at
http://faculty.genesee.edu/macrittenden/phy133.htm