Homework Statement
Hi,
This is not a homework question. I have my exam for my physics unit tomorrow. I am pretty set for it except for questions of this type. Can you please show me how I can get the answer?
Thanks
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Homework Equations
N/A
The Attempt at a Solution
N/A
Homework Statement
A thin film of glass is in flush contact with a thin film of transparent plastic that has a higher index of refraction than the glass. Monochromatic light of a certain frequency is shown on both sides of this combination, and there is very little light reflected from either...
Homework Statement
I have read that the phase difference between two sinusoidal signals is calculated as follows:
$$\theta = \omega \Delta T = \frac{2 \pi}{T} \Delta T$$
Where ##\Delta T## is the time difference. This formula confuses me as it was derived from nowhere.
I am asked to compute...
Phase difference between two component of Electric field vector seems to me that the phase difference for circular should be of odd multiples of 90 but its not 90 when n value substituted. Please help for solution..
Phase difference between clocks with distance
Homework Statement
Derive Phase difference between clocks with distance
Homework Equations
I honestly don't understand how this equation ΔT = vD/c2 is derived/figured out.
The Attempt at a Solution
We haven't covered Lorentz...
Homework Statement
A radio station transmits a radio wave of 100Mhz. The radio wave is detected by a receiver via two diffrent paths , a direct path and refelcted path form a wall. The distance traveled by the radio wave for a direct path and refelcted path is 1500m and 1512 m respectively...
Homework Statement
the question doesn't state that which particle is leading/lagging which particle.
Homework Equations
The Attempt at a Solution
for the first particle, my working is 10 sin(2pi/3 )= 8.66cm
for the second paticle, my working is 10 sin(2pi/3+ 30pi/180)= 5 cm...
Homework Statement
since point P is ahead of point O, why the displacement , y , of P shouldn't be Asin(wt + 2pi/(x)) ?
Homework Equations
The Attempt at a Solution
Homework Statement
i can't understand why curve above is for under dampling and the below curve is increased dampling. can someone explain please?
https://www.flickr.com/photos/123101228@N03/14296397365/
Homework Equations
The Attempt at a Solution
Homework Statement
for part ii , why the phase difference isn't =pi/2 ? I'm having problem uploading the photo .https://www.flickr.com/photos/123101228@N03/14289633415/
Homework Equations
The Attempt at a Solution
Hi, I'm trying to figure out what phase differences take place with an ideal transformer. This is what I have figured out so far:
If you apply an AC current to the primary coil then you will get an alternating flux in the primary and secondary coils simultaneously therefore the fluxes are in...
I'm wondering about small changes of phase due to a refractive medium. For example, suppose there is an emitter of radio or light waves, and two detectors equidistant from the emitter. One of the detectors is behind a medium, while the other is a straight shot through a vacuum.
How would...
Homework Statement
The potential difference across a circuit is given by the complex number
V=40+j35volts
and the current is given by the complex number
I=6+j3 amps
a) sketch the appropriate phasors on an Argand diagram.
b) Find the phase difference between the phasors for voltage V and...
Homework Statement
Light with wavelength 540 nm is split into two beams that travel along two paths. The difference between the path lengths is 3600 nm. What is the effective phase difference when the light recombines?
Homework Equations
\phi = (2pi/λ)*ΔL
The Attempt at a Solution...
1. Hey, the question I believe should be fairly simple to solve but it's been a while since I've looked over such content. There are two light waves that enter a crytstal at the same time, one linearly polarised parallel to the optic axis and one perpendicular to the optic axis, they have...
Homework Statement
An observer stands 3 m from speaker A and 5 m from speaker B. Both speakers, oscillating in phase, produce waves with a frequency of 250 Hz. The speed of sound in air is 340 m/s. What is the phase difference between the waves from A and B at the observer's location...
Homework Statement
A beam of light of wavelength 606 nm passes through two slabs of material of identical thickness d= 1.40 micrometers, as shown in the figure. The slabs have different indices of refraction: n1= 1.51 and n2= 1.68. What is the phase difference (in radians, do not enter units)...
Homework Statement
Its part B ii) and iii) that I'm stuck on.Homework Equations
Apparently for stationary waves, the phase difference between two particles = m(pi), where m is the number of nodes between the particles. This is according to my textbook here:
The Attempt at a Solution
So...
An observer stands 3 m from speaker A and 4 m from speaker B. Both speakers,
oscillating in phase, produce 170 Hz waves. The speed of sound in air is 340 m/s.
What is the phase difference (in radians) between the waves from A and B at the
observer’s location, point P?
And I have no idea how...
Homework Statement
See attached image
Homework Equations
Δphi = 2pi(Δx/λ) + Δphi0 = 2pi(m) -- at the maximum
Δphi = (m + .5) (2pi) -- at the minimum
The Attempt at a Solution
The first step should be to solve for lambda, the wavelength.
So I plug in the knowns:
At 30 cm...
Homework Statement
Atomic losses can be described in the Lorentz model by adding into the equation of motion a damping term proportional to velocity. The equation of motion is then \partial ^2x(t) / \partial t^2 + \gamma \partial x(t) / \partial t + \omega_o^2 x(t) = qE/m
Consider the optical...
ok, I would just like to know in general b/c we have to do this a lot.
The equations have the same amplitude, but different k and w
suppose you have y1 = Asin(k1x-w1t) and y2 = Asin(k2-w2t)
and only other information is they are on a string, at a point x, and a time t.
side note...
Homework Statement
Two loudspeakers emit sound waves along the x-axis. a listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x=0.50m. If speaker 1 is slowly moved forward, the sound intensity decreases and then increases...
Homework Statement
Find the phase difference between two harmonic oscillators at time t=1
Homework Equations
I've already found x(t)= .4 cos(2.1t) and x(t)= .4cos((pi/2)t + pi)
The Attempt at a Solution
I don't really know where to begin
Homework Statement
Light of free space wavelength 600 nm (6000 Å) travels 1.6 10
-6
m in a medium of
index of refraction 1.5.
Find:
1. the optical path length, [This is the physical path length x refractive index.]
2. the wavelength in the medium, and
3. the phase difference...
When two wave functions are in perfect phase = constructive interference
when the phase difference is half (the wavelength) = destructive interference
What happens when the phase difference is more than one wavelength in case of:
Case 1: single particle interference
Case 2: two-photon...
Hi, I am repeating first year exams and would really appreciate some help with my study. Just can't seem to get my head around this problem.
Homework Statement
Consider two identical ideal springs with a mass m attached which are harmonically oscillating out of phase relative to each...
Hi,
I can't get my head round this:
Suppose I have two transmitters A and B, at different distances (d_A, d_B) from a reciever, C.
Each transmitter transmits a sinusoidal wave towards the receiver, which I will be modelling as 1 dimensional traveling waves, each given by the equation...
Homework Statement
http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_s09_qp_2.pdf
number 5b
The speed of sound is 330ms-1
The frequency of sound from S1 and S2 is increased. Determine the number of minima that will be...
Homework Statement
In the figure below, sources A and B emit long-range radio waves of wavelength λ = 390 m, with the phase of the emission from A ahead of that from source B by 90°. The distance rA from A to detector D is greater than the corresponding distance rB by 130 m. What is the phase...
Homework Statement
A beam of light of wavelength 600 nm passes through two slabs of material of identical thickness d= 1.40 micrometers, as shown in the figure. The slabs have different indices of refraction: n1= 1.41 and n2= 1.58. What is the phase difference between the two parts of the...
does getting which-way info introduce a phase difference (or cause de-coherence) between both the "waves"?
and does erasure of which-way information restore coherence?
hi
i have a textbooks that says that if you have a driven RLC at its resonance frequency and now you increase the inductance, then you would measure a phase difference between the external emf and the voltage at the capacitor that is now greater than pi/2
unfortunately, i do not know how to...
Hi,
I need someone to rephrase the question or tell me what it is actually asking for because I am not sure I understand it clearly:
Consider a plasma slab of width L. k_0 is the wave number in a vacuum, and k in the wave number in the plasma, where k satisfies the dispersion relation...
Hello everybody,
I'm having some trouble comprehending the following image. I am supposed to be able to deduce from the figure that the total difference in phase angle is (k-k')r. To begin with, I do not understand why for the diffracted wave the difference in phase angle is -k'*r while for the...
Homework Statement
Wave functions:
y_1=2.00sin(20.0x-32.0t)
y_2=2.00sin(25.0x-40.0t)
The units are centimeters and seconds. What is the positive x value closest to the origin for which the two phases differ by \pm\pi at t=2.00 s
The Attempt at a Solution
My understanding is...
1) Two sine waves have equal peak to peak amplitudes 89 but are out of phase by 180 degrees. What is the peak to peak amplitude of the resultant wave.
2)Two sine waves have equal peak to peak amplitudes 81 but are out of phase by 90 degrees. What is the peak to peak amplitude of the resultant...
Homework Statement
Sources A and B emit long-range radio waves of wavelength 550 m, with the phase of the emission from A ahead of that from source B by 90°. The distance rA from A to a detector is greater than the corresponding distance rB from B by 140 m. What is the magnitude of the phase...
Homework Statement
The problem I am misunderstanding begins with a reference to a previous problem and example. Let me begin to ask my question by showing my work for the previous problem and describe the example in reference.
(reference problem) - Ch.1, #13.
Consider a reference frame...
Homework Statement
Electromagnetic waves contain time varying electric and magnetic field perpendicular to each other and also to path of progression. The phase difference between electric field vector and magnetic field vector is zero
Homework Equations
The Attempt at a Solution...
In an RC circuit, two parallel branches, one branch with two resistors in series, and the other with a resistor and a capacitor in series. What is the phase difference between the two parallel branches of an AC signal?
Have R, C, f. I was told I would be able to calculate this phase difference...
Homework Statement
I have a graph of two sinusoids which I need to find the frequency of and phase difference between the two. I have the frequency easily enough, I hope, and I found what I believe is the actual formula for each wave. But I have no clue as to finding the difference. Homework...
for one section of my project, i need to know the phase difference between two signal.
they are both 40MHz, but out of phase by a certain angle.
i have a AD8333 board from Analog Devices,
it is a dual I/Q demodulator consist of double-balanced gilbert cell mixers.
The board has 2 RF inputs, a...
Hello,
What are phase difference and path difference?
Can you give me a simple explanation so that I could imagine
It would be great if there are some illustrations
Thanks
do all which-way attempts/techniques introduce phase difference between the "waves"?
In a double slit experiment
One hypothesis (or fairly well accepted theory?) is:
If we try to find which-way via Quarter Wave Plates (QWPs), we add a phase difference (between the "waves that seems to have...
Homework Statement
I have another Wave Interference problem that I am having trouble with.
http://img199.imageshack.us/img199/6104/questionsv.png
Homework Equations
[PLAIN]http://img151.imageshack.us/img151/3535/hintg.jpg
The Attempt at a Solution
f = 90.0 MHz
λ =...
I have a question.
Why is it that the phase difference between two oscillating points which are both located in between two ADJACENT nodes is zero ?
Can someone prove this via a calculation ?
Hi,
I'm having some trouble understanding the path difference between two parallel rays leaving a single slit, and was hoping you guys could help me. I'm having a hard time understand what path differences exist for each subsection of a slit and for which minimum. For example:
-What is the...