Here's the question:
The transverse wave shown is traveling from left to right in a medium. The direction of the instantaneous velocity of the medium at point P is:
A. no direction since v = 0
B. to the right
C. upwards
D. at an angle upwards and to the right
E. downwards...
Hello. I'm having some difficulty with a question from Optics (4th edition, Hecht).
http://milicioner.hit.bg/newphysicsquestion.GIF
I included the answer in the same image (it is at the end of the book), but I can't understand why (-E/(rsqr2))i must be negative.
Thank you
I roughly understand that when we hit a metal rod right into the end will excite longitudinal vibration in the metal rod, and the place we hold will be a node. the position i hold will kind of determine the frequecy of the ringing sound produced. Is that right?
But what will happen if we hit...
for the beam in the diagram
E=2.1e6kg/cm2
Ixx=3600cm4
find:
the principle stresses in the beam
the strains ex, ez e(45) found on the strain rosette placed at point 4
i have only managed to find the principle stress z which i found at point 1 --- 1406kg/cm2 where would i find...
i know that
τ=VQ/(Ib)
now I am looking for the maximum stress so i will find that at the point at the centre of the rectangle
Q=A*\bar{y}
A=0.5*d*b
\bar{y}=0.25*d
===> Q=0.125d2b
I=(b*d3)/12
τ=VQ/(Ib)
τ=V*0.125d2b*12/((b2*d3)
τ=1.5V/(bd)
now d changes as a function...
What is transverse momentum?
I think I have a general gist but I may be wrong. I'm thinking that when two object collide and shatter, then all the shattered pieces' momentums should add to be the same as the momentum of the two objects just before colliding. But how would you find the...
Homework Statement
In the situations where a transverse or longitudinal wave is propagating through a medium, the medium moves. How do you determine the speed of the medium's motion? When is the medium's speed at a maximum?
Homework Equations
The speed of the propagating wave is v = frequency...
Hi, a search on google will reveal that an ocean wave is both transverse, and longitudinal. Another search will also reveal that a transverse wave cannot propagate through a liquid.
One of these statements is not quite right, is it that water is a special case liquid that can propagate...
surface plasmons not exist for transverse electric polarisation? and only exist for transverse magnetic polarisation
can anyone help meeeeeeeeeeeeeeeeeeee please
Hello,
As far as I understand, a transmission line is simply a wave-guide for TEM modes.
If the waves are propagating in the z direction so Hz=Ez=0. How does this fact leads to the conclusion that in any transverse plane (xy plane) the fields are conservative?
Thanks a lot.
Homework Statement
Monochromatic transverse wave is propagating
in the positive x direction on a string (neither end is fixed).
The wave velocity is 12 m/s, amplitude 0.05 m, and wavelength is 0.4 m.
At t=0 and x=0 the string altitude is 0, and moving in
the positive y direction [i.e...
a string of length l and mass m hangs freely from a fixed point
calculate the velocity of the transverse wave at any position
sol:
mass per unit length is m/l
let there be a point on the string at a distance x from free end
tension at the point=wt of the string per unit length*part of the...
One paper claims that the flyby anomaly only exists because NASA scientists forgot about the transverse Doppler effect. If that's true, why is it still called an anomaly? Why isn't everyone banging their heads on walls and thinking, "D'oh! I can't believe I forgot about that!"? If it's not...
I understand that light propagates as a transverse wave -- does this mean that the momentum carried by a photon is perpendicular to its path?
Thanks for the help.
In the classical picture of an electromagnetic wave, the wavelength is specified along the direction of travel. However, with EM shielding that is using a grid (microwave, chicken wire), I've heard that so long as the spaces are less than the wavelength, you will achieve electromagnetic...
hey friends please solve my problem
Both longitudinal and transverse waves can propagate through a solid. A wave on the surface of a liquid can involve both longitudinal and transverse motion of elements of the medium. On the other hand, a wave propagating through the volume of a fluid must be...
Hey my friends please solve my problem
Both longitudinal and transverse waves can propagate through a solid. A wave on the surface of a liquid can involve both longitudinal and transverse motion of elements of the medium. On the other hand, a wave propagating through the volume of a fluid must...
Please how would one derive the Poisson Equation model,
\nabla^{2}\psi(x) = \frac{F(x)}{T},
for Transverse displacement \psi(x) of a stretched string under constant non-zero tension T and an externally applied transverse force F(x) . Assuming small angle with the horizontal (i.e...
I heard that transverse wave can not travel trough gas and liquid then how can light travel through all the way to earth?
Is it because the light is the collection of small energy particles called photon and not just behave as the normal waves?
There is no "Transverse Gravitatonal Redshift"
There has been a lot of noise on this forum lately about A. Mayer's so-called "Transverse Gravitational Redshift." It is not difficult to prove that no such effect exists, yet I have not seen anyone post a calculation to prove it. I have therefore...
Homework Statement
Having two identical waves, knowing how much they're out of phase with each other, how can I know the amplitude of the resulting wave (as a factor of the original amplitude)?
Homework Equations
The Attempt at a Solution
Homework Statement
The equation of a transverse wave traveling along a very long string is given by y = 6.0sin(0.012pi*x + 4.9pi*t), where x and y are expressed in centimeters and t is in seconds.
Find the maximum transverse speed of a particle in the string.
Homework Equations...
The transverse displacement of an harmonic wave on a stretched rope is y = 0.04 cos(2.5 x - 5 t), where x and y are in meters and t is in seconds.
a) What is the amplitude of this wave?
A = m *
.04 OK
b) What is the wavelength of this wave?
c) What is the speed with which this...
Homework Statement
Please explain the difference and try to give examples. I know that the displacement of the medium in a transverse wave is perpendicular to the direction of wave travel and in longitudinal is parallel to the direction of wave travel, but does this mean that transverse waves...
A transverse wave on a rope is given by y(x, t)=
(0.750\; {\rm cm})\, \cos ( \, \pi [(0.400\;{\rm cm}^{ - 1})x+(250\; {\rm s}^{ - 1})t])
Find the period.
This should be simple, but I keep getting the wrong answer in Mastering Physics. I can't find any explanation in my book, and it's...
Homework Statement
The left-hand end of a long horizontal stretched cord oscillates transversely in SHM with frequency f = 250 Hz and amplitude 2.6 cm. The cord is under a tension of 140 N and has a linear density \mu = 0.12 kg/m. At t = 0, the end of the cord has an upward displacement 1.6...
Homework Statement
A Transverse wave on a string is described by this function :
y=.25(meters) sin[\frac{\pi(4)}{8} + \pi4t]
a.) Find the speed of the wave at t= 2sec
b.) Find the acceleration at t= 2sec
Homework Equations
y=.25 sin[\frac{\pi(4)}{8} + 4\pit]
The Attempt at a Solution...
Homework Statement
A periodic transverse wave is established on a string such that there are exactly two cycles traveling along a 3.0m section of the string. The crests move at 20 m/s. What is the frequency of the wave?
Homework Equations
?
The Attempt at a Solution
Dont know how...
Not 100% sure if this is supposed to be in Math or Physics...Admin please move if it is wrong...?
Homework Statement
A long string under tension t having linear mass density u1 is tied to a second string with linear mass density u2 << u1. Transverse waves on the heavey string are incident...
A transverse wave is traveling on a string. The displacement y of a particle from its equilibrium position is given by y = (0.0230 m) sin (34.6t - 2.04x). Note that the phase angle 34.6t - 2.04x is in radians, t is in seconds, and x is in meters. The linear density of the string is 1.90 x 10-2...
A transverse wave is traveling on a string. The displacement y of a particle from its equilibrium position is given by y = (0.0221 m) sin (28.9t - 2.20x). Note that the phase angle 28.9t - 2.20x is in radians, t is in seconds, and x is in meters. The linear density of the string is 1.87 x 10-2...
Homework Statement
A heavy rope 3 m long is attached to the ceiling and allowed to hang freely. Let y = 0 denote the bottom end of the rope. To get started on this problem, imagine cutting the rope at an arbitrary value of y. Draw a free body diagram of each of the two pieces of rope to...
This thread is a continuation of another thread where the mechanics of water waves were discussed - see: https://www.physicsforums.com/showthread.php?t=274210
I'm trying to understand the detailed mechanics of a transverse wave in a rope. I base my ideas here on Crowell's textbook (see...
Hello all!
I'm trying to understand and in detail analyse how transverse mechanical waves work, and have had troubles finding anything on the net, except for the link below. Let's begin with a water wave. The following questions then:
1) Firstly, I wonder if it's possible to find, buy or...
Homework Statement
A transverse wave on a string is described by the wave function
y = (.120m) sin(pie/8 + 4pie(t))
(a) Determine the transverse speed and acceleration of an element of the
string at t=0.200s for the point on the string located at 1.60m
(b) What are the wavelength...
A transverse sinusoidal wave on a string has a period of 25 ms and travels in the negative x direction with a speed of 30 m/s. At t=0, a particle on the string at x=0 has a displacement of 2 cm and is traveling downward with a speed of 2 m/s.
Find the amplitude, phase constant, and maximum...
Homework Statement
Problem: http://img355.imageshack.us/my.php?image=a3physicsfa1.png
Homework Equations
http://hyperphysics.phy-astr.gsu.edu/Hbase/Waves/powstr.html
The Attempt at a Solution
Yeah, can someone help me exactly to find the velocity I need in order to plug it into...
Homework Statement
A transverse traveling wave on a cord is represented by D = 0.38sin(5.1x+30t) where D and x are in meters and t is in seconds. Determine maximum and minimum speeds of particles of the cord.
Homework Equations
First derivative
The Attempt at a Solution
I took...
Homework Statement
Consider a string of total length L, made up of three segments of equal length. The mass per unit length of the first segment is mu, that of the second is 2*mu, and that of the third mu/4. The third segment is tied to a wall, and the string is stretched by a force of...
Homework Statement
http://books.google.com/books?id=uAfUQmQbzOkC&pg=RA1-PA130&lpg=RA1-PA130&dq=transverse+oscillations+spring+trisection&source=bl&ots=4tThicDJOS&sig=d7POqmkxlKMhS72_Rv7oTpMko1o
Problem 5.17.
Homework Equations
Newton's second Law (F = ma)
The Attempt at a Solution...
Hi all, i want to ask a simple question which is not so for me. Actually while studying transverse waves, a line is written:-"EACH TRANSVERSE WAVE HAS TWO POSSIBLE POLARISATION STATES". Can anybody tell me please which are those two possible polarisation states refer here (either up and down or...
Displacement of Transverse Waves HELP!
Homework Statement
At time t=0, the displacement of a transverse wave pulse is described by y=2/(x^(4) +1), with both x and y in cm. Write an expression for the wavefunction as a function of position x and time t if it is propagating in the positive x...
Homework Statement
Algebra based physics: A 23 kg mass is suspended from the bottom of a rope of length 2.4 m and mass 17 kg. The acceleration of gravity is 9.8 m/s^2.
Find time for a transverse wave to travel the length of the rope. Answer in units of sec.
Homework Equations
u= mass...
I'm trying to calculate transverse wave speed for a point on a taut string when the y displacement is 12.0 cm. The given wave function is 15.0 cm cos(Pi*x-15Pi*t), and that is all I am given. How do you do this?
Homework Statement
A wire OA connects the collar A and a reel located at O as shown in the picture. Knowing that the collar moves to the right at a constant speed v0, determine θ'' (the 2nd-order-derivative of θ) in term of v0, b and θ.
http://www.freeimagehosting.net/uploads/3cad8b54c6.jpg...
Homework Statement
The wave function for a traveling wave on a taut string is (in SI units) the following equation.
y(x, t) = (0.12 m)sin(6πt - 3πx + π/4)
What is the maximum magnitude of the transverse speed of the string.
I don't quite understand the question.
Does it mean the speed...
Hello!
The following is my problem (a question from an old exam paper);
http://img341.imageshack.us/img341/5142/69855901wv3.gif
Well, I'm stuck on part c and d.
I already got the correct answers for a & b;
v = \frac{\omega}{k} => \frac{4}{3} = 1.3 m/s
K = \frac{2\pi}{\lambda}...