Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Name:
Date:
Section:
Station #
Lab Partner
Lab III: Resistors and Capacitors
4
s
Allowed units:
V
F
Part A
Place Picture here
Ignore steps to
run solver in
writeup.
Instead, after
calculating 2,
click the button
below.
Part B
units>
time
s
0
1
2
3
4
5
6
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Name:
Date:
Section:
Station #
Lab Partner
Lab I: Electric and
Magnetic fields
12
m
Allowed units:
V
mT
Part B
Part A
Place Plot here
Part D
Part C
C1
3.5
d
m
0.086
units>
a0
units>
m
0.008
C2
2.3
1
V
V
3.75
2.95
2.46
2.08
1.57
0.97
Vth
5
V
3.774927
2.5
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Name:
Date:
Section:
Station #
Lab Partner
16
Lab V: Resonance in
an LRC Circuit
Adjust these values after you add
your theories to your plot!
Allowed units:
Hz
V
Part B
f0est
Hz
19000
Part A
units>
Place Picture here
fo6kHz
fo3kHz
fo1.5kHz
fo0.5kHz
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Syllabus for Physics 271  Fall 2014
General Physics: Electrodynamics, Light, Relativity and Modern Physics (Laboratory)
1. Official Course Description: PHYS271 General Physics: Electrodynamics, Light, Relativity and
Modern Physics (Laboratory); (1 credit
39.8. Solve: The probability that a photon arrives at this 0.10mmwide strip is
N
Prob in0.10mmatx =
( ) 1.0x1010
= P(x)6x
where N is the number of photons detected in the strip and the total number of photons is 1.0x 1010. We have
N: (1.0x1010)(20 m'1)(
35.40. Visualize:
Parallel '2;
capacitors % C1 1 C2: %:
Series C1 C2]: :>
capacitors
Solve: For a circuit with parallel capacitors, CI) = C1 + C2. The current in the circuit is
3
Inns=8rm5= arms ml=wcmss 2 CP=C1+C2=I&=545X31#=8.674X10'6F
Xc (a)C) wsrms
37.32. Model: Assume the elds are uniform.
Visualize:
25.05 cm
Solve: Between the plates, the elds are crossed so that the particle passes through the plates without deection.
From Equation 37.8, the speed of the particle is
v=m=1500x106 m/s
B 0.1250 T
36.49. Model: The earth is frame S and the starship is frame 8'. S moves relative to S with a speed v.
Solve: (a) The speed of the starship is
_ 20 1y _ (20 y)c
= 0.80c
25 y 25 y
V
(b) The astronauts measure the proper time while they are traveling. Th
41.5. Solve: A 6f state for a hydrogen atom corresponds to n = 6 and l = 3. Using Equation 41.2,
_ 13.60 eV
_ 62
The magnitude of the angular momentum is L = [(1 + l)h = 3(3 + l)h = x/Eh.
E6 = 0.378 eV 41.6. Model: No two electrons can have exactly the s
22.34. Solve: According to Equation 22.7, the fringe spacing between the m fringe and the m + 1 fringe is
Ay = lL/d. Ay can be obtained from Figure P2233. Because the separation between the m = 2 fringes is 2.0 cm, two
consecutive fringes are Ay = %(2.0 c
University of Maryland at College Park
Dept. of Aerospace Engineering
ENAE 202: Aerospace Computing
Problem Set #3
Exercise #1:
The le spots.mat is a Matlab data le containing sunspot data collected over the
past 30 years or so. Download this le to the De
University of Maryland at College Park
Dept. of Aerospace Engineering
ENAE 202: Aerospace Computing
Lab #2
Exercise #1:
Try it:
Dene a couple simple complex numbers in Matlab, like z1 = 1 2j and z2 = 3 + 4j.
Verify that the real and imag functions give th
34.36. Model: Assume a uniform electric eld inside the capacitor. The displacement current Idisp between the
capacitor plates is numerically equal to the current I in the wires leading to and from the capacitor.
Solve: (a) From Equation 31.36, the voltage
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Na me:
Da te:
S ection:
S ta tion #
La b Pa rtner
Lab IV: Faraday's Law
4
Ohms
H
Rx
t0
Ohms
80
s
0.00014
V
Allowed units:
s
Hz
m^2
T
s
0.0002
Part A
Place Pic here
R
Ohms
100
L
H
0.037
VL
V
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Na me:
Da te:
S ection:
S ta tion #
La b Pa rtner
Lab II: The multimeter, signal
generator and oscilloscope
4
V
Allowed units:
A
s
Part A
Part B
units>
Place Picture here
R1
9 9 .7
R2
29 8
R3
29 8
R4
987
Measured parallel
Expected parallel
resistance of
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Name:
Date:
Section:
Station #
Lab Partner
Lab IX: Polarized Light
16
Allowed units:
V
degrees
Part A
Place Pic here
Ignore steps 4 and 5 in part C of the
writeup. Just measure at the indicated
angles.
Part B
Iback
units>
Voltages should be well below 10
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Experiment
III
Resistors and Capacitors
I. Purpose
The purpose of this lab is to let you observe the behavior of electrical circuits made with
resistors and capacitors.
II. Preparing for the Lab
You need to prepare before going to the lab and doing this e
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Experiment
II
The multimeter and oscilloscope
I. Purpose
The main purpose of this lab is to teach you how to use a multimeter and oscilloscope. You will
also make some simple measurements to verify Ohms Law.
II. Preparing for the Lab
You really need to pr
Electrodynamics, Light, Relativity and Modern Physics
PHYS 271

Fall 2014
Experiment
1
Electric and Magnetic Fields
I. Purpose
The purpose of this lab is to observe and measure the electric potential or magnetic field
from some different sources.
II. Preparing for the Lab
You need to prepare for this lab before your lab session