Can someone give me a better intuition of bandwidth.
The way I see it, is that the bandwidth is the range of frequencies which a signal/wave is allowed to have. This doesnt feel complete though.
For example, how can I explain that TDMA, FDMA and CDMA are similar in this sense. As far as I know...
Hi,
On a driving force graph ##y = displacement (m)## and ##x = time## where the external force start at t = 0 and the system is in equilibrium at x=0, it's easy to find the driving frequency.
$$F = \frac{\omega}{2\pi}, \omega = \frac{2\pi}{T}$$ and we can get ##T## easily with the steady...
So, my thinking was that we use the formula
V=f(lambda)
and substitute the f so,
V = 440(lambda)
but then i dont have another number to cancel or rearrange by.
And since closed air columns have the fractions of 1/4, 3/4, and 1 1/4 (5/4), we could divide by those?
I understand that electrons of a material have a natural frequency of vibration and the refractive index results from the phase difference between the incident light's field oscillations and the field oscillations of these electrons...
I just noticed something that is a little bit of a different perspective on a mass-on-spring (horizontal) simple (so undamped) oscillator's frequency and looking for some intuition on it.
There are many ways to derive that for a mass on a horizontal frictionless surface on a spring with spring...
I have general equation for undamped forced oscillations (no friction) which is:
I just wonder about,what type of motion should occur when initial conditions are both 0 (i.e v0=0 and x0=0). My intuitive expectation is that as there is no 'natural' oscillations at beginning,vibration has to be...
I have some doubts about whether Planck's relation (E=hf) applies to radio waves. This has been bugging me because trying to apply Planck's relation to radio frequency results in some inconsistencies that I've been unable to resolve. BTW, I have no physics training, so please go easy on me...
I know the following equations for if the damping ratio is less than 1:
$$\sigma = -\zeta \omega_n$$
$$\omega = \sqrt{(1 - \zeta ^2)\omega^2_n}$$
I am given the following circuit that I built on LTSpice:
Measuring the voltage between node 2 and ground (blue), and the voltage Vc4(t) (green) I...
Hi, I am unsure of what uncertainty to get, so here is my full question: I used the CRO for an experiment, and since what I need is frequency, I read the period, so for the uncertainty of the period, it is the smallest division divided by two. So if my uncertainty for period is 0.001s, then what...
Pretending the siren is at rest in air:
Wavelength = velocity/frequence --> (343 m/s) / 10,000 Hz = .0343m.
I don't believe this is the correct way to go about solving the problem, since the vehicle is moving at the start and the siren is not at rest.
Hi everyone,
I'm pretty new to electromagnetism and have no experiences in this topic.
I have a signal generator (Digital Dual Channel Funktion Signal Generator) and want to generate two signals (530 and 550 Khz signal) and want to transmit these generated signals to the points on a table...
I 'am stuck at , what fraction of the shoes were size 4 I know the frequency is missing. The frequencies are 8,9,9,3,1.
My thinking you how to add the frequencies and put 4 over it. Explain to me if I'm wrong.
Thanks in advance
Hello!
I know that a square or saw tooth wave consists of infinite amount of sinousoids each having different frequency and amplitude. But when I look at their plot they seem to have a well defined frequency or period. Which term in the fourier series determines their frequency? Does a saw...
Explanation: Let's say I have something generating a frequency of 60hz. If I pulse that frequency on and off, 10 times a second, does that amplify the distance that wave will travel through space? Let's assume the medium it is traveling through is consistent for the moment. If the 60hz...
Homework Statement
An oscillator consists of a block attached to a spring (k=400n/m). At some time t, the position (from equilibrium), velocity, and acceleration of the block are x= .100m, v= -13.6m/s, a= -123m/s^2.
What is the frequency? mass of block? amplitude.
Homework Equations
position...
I want a clear formula for clear water (and salty water) penetration by giving only the radio wave frequency .
I searched the web , the formulas on the web are so complicated .
Are there any simple formula available for that ?
Hello. I have a very small antenna and I was wondering if it can receive and/or transmit low frequency signals (or if it can only receive/transmit high frequencies). Likewise, do I need a very large antenna to receive/transmit low frequencies? I've read somewhere on the internet that the...
if freqeuncy is 1/t then if i was given t, then f is the reciprocal of t right?
f=1/t
t=20s
f=1/20
f=0.05Hz right?
another thing,
if 1 is the number of cycles per second, isnt it also a variable?
so if i know the freqeuncy which is 0.05 Hz, and the T is 20s, then the number of cycles is...
Homework Statement
[/B]
When a stream of air is directed over the end of a 40 cm long piece of plastic pipe, open at both ends, a sound is produced.
(a) Explain why this occurs
(b) If the bottom end of the pipe is covered, what will happen to the pitch of the sound? Explain
Homework Equations...
Is it feasible to design and development Smartphones apps which will access,control & monitor quadcopter Drones operating at 2.4 GHz & 9.8 GHz wireless frequencies?
Thanks & Regards,
Prashant S Akerkar
Hi.
I have a spring with spring constant 30 N/m and a mass of 0.5 kg. With the mass at the bottom, the spring has the length 58 cm at rest. If I now pull down the mass and release it, it starts with a vertical oscillation, then the spring also starts to swing sideways like a pendulum and the...
Title says it all.
Also, if the frequency of electromagnetic radiation is limited, why? My guess is the wavelength is limited to the Planck length, and when I plug those numbers into the calculator, I get 1.855 * 10^43 Hz. The maximum (Edit: observed) frequency of a gamma ray is 3 * 10^20 Hz...
Hi;
Let's imagine that I have an antenna and a biological tissue.
The antenna emits the frequency of 1e7 Hz and I have a temperature increase x.
When the antenna emits the frequency of 3e7 and 6e7 Hz the temperature increase is the same.
How can I explain?
Hi.
Usually, the clarinet is presented as acting like a pipe system closed at one end, which only allows for harmonics that are odd multiples of the fundamental frequency. I used the app "SpectrumView" by OxfordWaveResearch to measure the following spectrum:
Fair enough, the amplitudes of the...
My question is about why the frequency of light or another EM wave does not change while passing through a medium. We know their Speed decrease and wavelenght change but think about this analogy for ex i am 4 meters high and drop 5 balls in 5 seconds and my friend waits at ground he will receive...
Homework Statement
The fundamental frequency of a violin string is 283 Hz. Calculate the frequency of the 2nd harmonic.
Known:
f = 283 Hz
Homework Equations
v = fλ
f(n) = n*v/2L
λ= L
v(sound) = 343 m/s
The Attempt at a Solution
λ = 343/283 = 1.21 m
f(2) = 2*343/2*1.21 = 283 Hz.
I'm getting...
Hey,
I read about charge carriers in semiconductors in a magnetic field.
They write that for several revolutions ##\omega_c \tau >>1## holds.
But I think for one revolution it is ##\omega_c \tau = 2 \pi##.
(##\tau## is the scattering time)
Why they do not write ##\omega_c \tau >> 2 \pi##...
Homework Statement
My question here isn't a specific question that has been given for homework, but a more general one. For an assignment I have to 'derive an expression for the resonant frequency, ω0' for two different systems, the first for 'a mass M connected to rigid walls via two springs'...