A toning fork of freguency 1000 Hz is mounted 25 cm from the axis of a rotating
horizontal tahle turmng at 4 rev/see. What are the highest and lowest equeneies
gird by auditor whose ear is at the same height as the tuning fork. (1019 Hz, 982
3,91%;ng 0 rm
$90th _ _
P. lo-
TWO jets of material from the center of a radio galaxy are ejected in opposite
directions. Both jets move at 0.7500 relative te galaxy. Determine the
speed of one jet relative to other. 8
cfw_0.960 e _
M- Lee 22.0.ng tar as tars
PW a? o 4 _ 1
M ' bras i ' ' .
_ ssgmm 51
A What is the velocity of a transverse wave in a string 150 cm long with a mass of 5 g . '
and subject to a tension of 12OQN? What is the fundamental frequency of this String?
(600 m/s, 200Hz) .
._. [loo
: [a
a A body of mass 5 kg is suspended by a spring, which stretches 0.1 111 when the body is
attached. It is then d1splaced downward as additional 0.05m and released. Find the
amphtude, period, and frequency of the resulting Simple Harmonic Motion.
(ans: A=0.
Pao .
ASSIQWM 5- 7 '
Two parallel slits used for a Youngs interferometer experiment are 0.5 mm apart
The screen on which the inges are projected is 1.5 m om the slits. What is the
distance between the fringes for monochromatic red light of wavelength 600
.3.
Imagine that you are at rest in a ' _
' . . ame ,[O'X'Y'z'] which m
lgorizontally past an mert1a1 frame [0 KY Z] at a Speed of 0.6;)st
fail, m the latter frame drops a ball which, according to your elock,
s for 0.5 sec. How long would the ball fall as
3% U-z mC'
Reg-W 558 W Mela/v15 Wai 7. M L4 L43
m: I
An electron moving to the right with a speed of 2.5):108 m/s passes an
electron moving to the left with a speed of 2.8x108 m/s. Find the speed of
one electron relative to the other as predicted by (a
i
A friend passes by you in a spacecraft traveling afEigiiE'i"ne' IO
tells you that his craft is 20.0 m long and that the identically
constructed craft you are sitting in is 19.0 m long: According to your '
ohservations , (a) how long is your space craft,
In a typic color television faicture tube, the Electrons afre '
accelerated through a potential difference of 25,000 V, (a) What
speed do the electrons have When they-strike the screen?, (b) Wat is
'QIS
their kinetic energy in joules? - Ans: (0.302c,
_ - ._ _ _ . _ _ .- ,qu
An atomic clock moves at 1000 km/hr for 1.0 hr as measured by an identical
"-1 clock on the Earth. How many nanoseconds slow will the moving clock be
compared with the Earth clock, at the end of 1.00 hr. interval? . Ans:
I
I -3 109
PW a? o 4 _ 1
M ' bras i ' ' .
_ ssgmm 51
A What is the velocity of a transverse wave in a string 150 cm long with a mass of 5 g . '
and subject to a tension of 12OQN? What is the fundamental frequency of this String?
(600 m/s, 200Hz) .
._. [loo
: [a
A toning fork of freguency 1000 Hz is mounted 25 cm from the axis of a rotating
horizontal tahle turmng at 4 rev/see. What are the highest and lowest equeneies
gird by auditor whose ear is at the same height as the tuning fork. (1019 Hz, 982
3,91%;ng 0 rm
Physics 206
Assignment 2
(Do any 8 problems)
Note: Take the speed of sound in air to be 340 m/s
1. What is the velocity of a transverse wave in a string 150 cm long with a mass of 5 g and subject to a
tension of 1200N? What is the fundamental frequency of
32
L
dI
dt
8.6 10 3
d
(I max sin( t)
dt
60Hz 120
2
I max 5.60A
d
8.6 10 3 (5.6sin(120 t)
dt
d
8.6 10 3 5.6 sin(120t)
dt
3
8.6 10 5.6 cos(120 t)(120 )
19.0 cos(337t)
f
B BA 0 nIA 0
N
IA
l
A r2
N B
N2
N2 2
L
0 A 0 r
I
l
l
dI
L L
dI
dt
dt
2
N
l
0
33
I max 2I rms
Vmax 2Vrms
v Vmax sin t
i I max sin t
For RL circuit
XL L
For RC circuit
1
XC
C
For RLC circuit
Z2 R2 (XL XC )2
Vrms I rmsZ
2
Pavg I rm
s Z I rmsVrms cos( )
tan 1 (
XL XC
)
R
Transformer coils
d
N V
V N
V1 1 2
dt
N2
Vrms I rms R
Vmax 2V
TOPIC
Electric Fields
Gausss Law
Electric Potential
Capacitance and Dielectrics
Current and Resistance
Direct Current Circuits
Magnetic Fields
Sources of Magnetic Field
Faradays Law
Inductance
Alternating Current Circuits
Electromagnetic Waves
CHAPTER
23
30
permeability
of
free
space
straight wire, q1 =/2 and q2 = -/2
oI
B
2 a
0 4 107 T m/ A
oI
B
4 R
a full circle
B
S R( rad )
will be in radians()
2
oI
I
I
o 2 o
4 R
4 a
2a
At
this
Bx
special
oIa2
3
2 2
2(a x )
2
point,
oI
2a
x
=
0
steady current()
ark of frequency 1000 Hz is mounted 25 cm from the axis of . iotating
table turning at 4 rev/sec- What are the highest and lowest frequencies
uditor whose ear is at the same height as the tuning fork. (1019 Hz, 982
_ F-v42.0Vu4b-Lcaa 3;. Somq'a 5: 10:30 H
$90th _ _
P. lo-
TWO jets of material from the center of a radio galaxy are ejected in opposite
directions. Both jets move at 0.7500 relative te galaxy. Determine the
speed of one jet relative to other. 8
cfw_0.960 e _
M- Lee 22.0.ng tar as tars
Asstgmww 5 1
Two parallel slits tused for a-Youngs interferometer experiment are 0.5 min apart.
The screen on which the anges are projected is 1.5 m from the slits. What is the
distance between the fringes for monochromatic red light of wa
. . . velength
PMgCS 3106 PA
SMGYNS
Aggrcgmm \
5U A body of mass 5 kg is suspended by a spring, which stretches 0.1 in when the body is
. attached. It is then displaced downward as additional 0.05m and released. Find the
amplitude, period, and frequency of the resulting
A certain sourceof sound radiates uniformly in all directions in air. At
a distance of 5 E11 the sound level is 80 dB. The frequency is 440 Hz.
(a)What is the displacement amplitude at this distance? (b) What is the .
pressure amplitude? (c) At What dista
.7
Although the speed of light is enormous, particles such as electrons, protons,
and neutrons encountered in atomic and nuclear physics frequently have
speeds comparable that of _ light. If a particle is moving at speed of
exactly0.6c, by What percent do
15
.- . "<3;
An astronomer on Earth observes a meteoroid in the southern sky
approaching the earth at a speed of 0.80. At the time of its discovery the
meteoroid is 20.0 light years from the Earth. Calculate (a) the time interval
required for the meteoroi
Sound Waves
Sound Waves (Longitudinal Waves)
Source, Direction of propagation
Vibrating surface .
Propagation
of zones of _ _ _ _ _ _
alternating
compression
and
rarefaction f\ cfw_\ Z\ cfw_\ cfw_\ cfw_\
. i
Wavelength, A
Propagation Speed = number of cyc
' s-
0 q. - 27 . . . . -
A proton of rest mass 938 MeV (1.67x10 kg) is given a kinetic energy of
9.3 8x109eV in a proton synchrotron. Find the mass of proton at this speed.
What must be the radius of the orbit if the vertical magnetic eld is 1.5
webers/mz
. ISL Find the mass of an electron traveling at 0.6 times the speed of light. How
many times as great as the rest mass is this value? .
Ans. (1. 14x1o3kg,125) - - '
' ~31
$5. RngtM 323M614 4W0- Q- lit/ma .
WgWmoc,
0. SC to 0. 96 Where c is the speed of. l
Wows
gsdgm M 6
?, 206/14
84 _ Find the angle of incidence for which the light reected from Water of
refractive index 1.333 is plane polarized. :- Ans: 53
W Mm m WWW WW 2%? 9"?
MW hagv W13 behind- - -. pewter
mwmwbtgtwqm '21? 445-52147
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ASSIGNMENT 3
Physics 206
(Do any ten problems)
1.
A certain source of sound radiates uniformly in all directions in air. At a distance of 5 m the
sound level is 80 dB. The frequency is 440 Hz. (a)What is the displacement amplitude at this
distance? (b) Wh