PHY2049
Chapter 37 Solutions
Problem 1:
If monochromatic light of wavelength 500 nm is incident on a single narrow
slit 0.02 mm wide, what is the width of the central bright spot (in cm) on a
screen that is 3 meters from the slit? (Hint: the width of the
PHY2049
Chapter 34 Solutions
Problem 1:
The electric field component of an electromagnetic wave traveling in
a vacuum is given by Ey = E0 sin (kx -t), where E0 = 300 V/m and
k=107/m. What are the frequency of the oscillations (in Hz) and the
direction of
HW 2A - Ch. 21
This print-out should have 15 questions.
Multiple-choice questions may continue on
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before answering.
001 (part 1 of 2) 10.0 points
A charge Q is distributed uniformly along the
x axis from x1 to x2 .
Lecture 10. EMF and Batteries, Power in Electric Circuits
Outline:
Batteries.
Non-ideal batteries: internal resistance.
Potential distribution around a complete circuit
Energy and power in electric circuits.
Lecture 9:
DC current: flow of charge carriers,
Lecture: Lead-acid batteries
ECEN 4517/5517
How batteries work
Conduction mechanisms Development of voltage at plates Charging, discharging, and state of charge
Key equations and models
The Nernst equation: voltage vs. ion concentration Battery model Batt
Word Equations Worksheet
Write the word equations for each of the following chemical reactions:
1)
When dissolved beryllium chloride reacts with dissolved silver nitrate in
water, aqueous beryllium nitrate and silver chloride powder are made.
2)
When isop
rodriguez (hr6898) Homework Ch 11 jisonna (P2425)
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Multiple-choice questions may continue on
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before answering.
1
equilibrium?
1. b2 m1 = a2 m2
2. a m1 = b m2
001 (part 1 of 2)
PHY2049
Chapter 27 Solutions
Problem 1:
Wire B is three times longer than wire A, and the two wires have the same
volume. If both wires are made of the same substance and if the resistance
of wire A is 9 Ohms, what is the resistance of wire B (in Ohms).
A
rodriguez (hr6898) Homework Ch 16-20 jisonna (P2425)
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before answering.
The source is moving away from the detector,
so vs < 0 and sin
rodriguez (hr6898) Homework Ch 14,15 jisonna (P2425)
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before answering.
001 10.0 points
The displacement in simple harmonic motion
is
rodriguez (hr6898) HW Ch 7, 13 jisonna (P2425)
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before answering.
001 10.0 points
When an object is moved from rest at point
A to rest
6. Analysis questions Answers
6.1 spring Oscillator
Q1. k average
n
Mi
Q.1 M=
i =1
n
k (N/m) mean
( 17.8 )+ ( 19.5 )+ ( 18.8 )+(18.9)
=18.75 N /m
4
Standard Deviation
Formula
=
i M
M
n2
i=1
Spring constants standard deviation
k
k 1
k
k 2
k
=
=
k 3
2+(
Resistors in Series: Rtotal=R1+R2+. Itotal=I1=I2=.
Vtotal=V1+V2+. V=IR
All voltage drops summed = total Voltage/ Power=IV, for each resistors power, use P1=IR1; P2=IR2 because voltages
not the same for each.
Resitors in Parallel: 1/Rtotal=1/R1+1/R2 Itotal
Chapter 2
Innite Products and Elementary Functions
The objective in this chapter is to lay out a working background for dealing with
innite products and their possible applications. The reader will be familiarized
with a specic topic that is not often inc
brice (db32768) Home Work # 6 lopes (22201)
This print-out should have 16 questions.
Multiple-choice questions may continue on
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before answering.
001 10.0 points
At distance r from a point charge q, the electric poten
PHY2049
Chapter 28 Solutions
R0 = 3
Problem 1:
Consider the circuit consisting of an EMF
and three resistors shown in the Figure. 24 V
R1 = 4
R2 = 12
How much current flows through the 4
resistor (in Amps)?
I1
I2
I
Answer:
3
Solution: The original cir
PHY2049
Chapter 22 Solutions
Problem 1:
A +15 microC charge is located 40 cm from a +3.0 microC charge. The
magnitude of the electrostatic force on the larger charge and on the smaller
charge (in N) is, respectively,
Answer:
2.5, 2.5
Solution: The magniti
PHY2049
Chapter 24 Solutions
Problem 1:
Consider a spherical conducting shell S1 of radius
R on which charge +Q is placed. Without touching
or disturbing it, this shell is now surrounded
concentrically by a similar shell S2 of radius 2R on
which charge -Q
PHY2049
Chapter 30 Solutions
I
Problem 1:
d
P
A
The bent wire carries current I, as
shown the Figure. What is the
magnetic field at point P, at distance d
B
o bend
directly opposite the 90
(k = 0/4)?
Answer: kI/d, out of page
v
dl r = 0 and wire B
Solutio
PHY2049
Chapter 33 Solutions
Problem 1:
If the total energy in an LC circuit is 5.0 microJoules and L=25 milliH,
then what is the maximum current (in milliA)?
Answer: 20
Solution: The maximum stored energy in the inductor is
U max =
1 2
LI max
2
and solvi
PHY2049
Chapter 32 Solutions
Problem 1:
A parallel-plate capacitor whose plates have radius R is being charged by a
current I. What is the magnitude of the magnetic field (in Tesla) between
the plates a distance r = R/2 from the center?
Answer: kI/R
Solut
PHY2049
Chapter 31 Solutions
Problem 1:
A long straight wire carries current I. Nearby
and lying in the same plane is a circular loop, as
shown in the Figure. If the loop is moved
toward the wire, what will be the direction of the
I
current induced in the
PHY2049
Chapter 23 Solutions
Problem 1:
What is the magnitude (in milliN) and direction of the electrostatic force on
r
a -2.0 microC charge in a uniform electric field given by E = (100 N / C ) x ?
Answer:
0.2 in the -x direction
Solution: The electrosta
PHY2049
Chapter 35 Solutions
Problem 1:
An object placed 180 cm in front of a spherical mirror produces an image
with a magnification m = 0.1. What happens to the image when the object
is moved 150 cm closer to the mirror?
Answer: the image increases in s
PHY2049
Chapter 36 Solutions
Problem 1:
Light from a small region of a 100 Watt incandescent bulb passes through a
yellow filter and then serves as the source for a Young's double-slit
interference experiment. Which of the following changes would cause th
PHY2049
Chapter 25 Solutions
Problem 1:
If the potential difference between points A and B is equal to
VA-VB = 3x104 Volts, how much work (in milliJoules) must be done
(against the electric force) to move a change particle (Q = 3 microC) from
point A to p
HW 2A - Ch. 21
This print-out should have 15 questions.
Multiple-choice questions may continue on
the next column or page nd all choices
before answering.
001 (part 1 of 2) 10.0 points
A charge Q is distributed uniformly along the
x axis from x1 to x2 .
PHY2049
Chapter 29 Solutions
Problem 1:
A charged particle, Q = 0.5 C, enters a region with a uniform magnetic field
r
r
B = 2 x + 3 y + 4 z (in Tesla). If its velocity is given by v = 2 x + 3 y + 2 z
(in m/s), what is the magnitude of the magnetic force