Resonance Definition and 630 Threads

"10th Planet" resonance with Neptune The "10th Planet" is locked in resonance with Neptune. 2003 UB313 is in a 17:5 resonance with Neptune. I've never seen a number as high as 17 be part of a resonance before . 2005 FY9 is in an 11:6 resonance with Neptune. Here's a page I made...

NMR rf Field hi all, could anyone help me explain how the rf B1 field in an NMR spectrometer works? Especially the mechanism it uses to flip the net magnetisation by an angle of 90 or 180 degrees? Would be very gratefull for a link or and explanation to this. Thanks Wadings

Greetings--I'm looking for data on estimates for the Higgs resonance width and I'm not quite sure where to look. I've checked the "Review of Particle Properties" and the Particle Data Group website, but I couldn't find an estimate for the higgs width. Any suggestions? Thanks, Flip

Why does everything have a natural frequency at which it oscillates when struck by a single force and then left to oscillate? Does everything only have one? Does it vary depending on what the original force to cause it to oscillate was? Also, why does force imposed at natural frequency casue...

Given a system where a damped spring has natural frequency equal to the frequency of the input oscillations, how do I choose a damping constant in order to maximize the response of the spring? Are there any issues with choosing a zero damping constant? (as this would surely provide the...

1/sin(phi) * d/d\phi(sin(phi) * du/d\phi) - d^2u/dt^2 = -sin 2t for 0<\phi < pi, 0<t<\inf Init. conditions: u(\phi,0) = 0 du(\phi,0)/dt = 0 for 0<\phi<pi How do I solve this problem and show if it exhibits resonance? the natural frequencies are w = w_n = sqrt(/\_n) =2...

:rolleyes: I am havin a bit of trouble w/ a graf here... its about resonance waves in resonance tubes and i have a straight line graph when i plot the values of length of the wave vs. 1/frequency. the problem is, i don't no what this line/slope is meant to represent? and it doesn't run through...

Hi, I'm taking a course on medical imaging (mainly MRI), and I'm having trouble understanding NMR. Can anyone explain what this is all about in plain language? Here is what I make of it: Odd-numbered nuclei possesses a total spin of magnitude 1/2 and an associated magnetic moment (why is...

Q1: Which are true: A) If the mass of the pendulum doubles, the period increases. B) If the ship accelerates upward, the period does not change. C) If the ship moves upward with a constant velocity, the period decreases. D) If the ship accelerates downward at 9.8 m/s2, the pendulum will...

ok I'm definitely having trouble with this lab due tomorrow. We did a lab in class where you get an adjustable tube and use different tuning forks. With the different frequencies of the forks we adjusted the tubes until it reached resonance? (loudess point) Alright so we got a bunch of numbers...

When one looks at the diagram neutron energy vs. probability of fission \sigma_f (measured in barns) there is a zone of resonance, characterized by peaks and valleys on the function \sigma_f. Why doesn't conventional nuclear power plants works in this zone, instead of using a moderator to slow...

so my problem deals with resonance in standing waves if you have a standing wave in a long pipe of length 2.90m and that is closed on the left end and open on the right end and the graph of it is as below, with x-axis the position along pipe and y-axis vertical air displacement...

I'm currently writing up a physics practical which looked at the resonance of the impedance of an LCR network. I'm trying to look for theoretical information on the internet, but am struggling to find relevant information. The LCR circuit I used had the inductor and resistor in series, then...

Hello forum. I'm in abit of a mess. My high school physics class is in the process or doing individual investigations into an aspect of physics we are slightly familar with. I had planned out an experiment to do with sound, but last minute i was told another person was doing something...

hi this is not physics homework I really need to find out the natural frequency of a window size glass so that I can brake it with a couple of speakers. this is not a prank joke either. I need a practical way to find it help please. So far all i know is that the frequency is low by hitting it...

This isn't really a homework question. I'm just trying to figure things out for myself about resonance in a circuit that they haven't taught us yet. Say you have a circuit Rp || L || C and you have a sine source and some load connected to it call it Re and you want to mesaure the gain. Vi...

What is the resonance frequency expression for a parallel RLC circuit? I know that for a series RLC circuit, it is: w=\frac{1}{\sqrt{LC}} Is it the same for a parallel RLC circuit? I remember reading somewhere that it was not exactly the same, although it approaches the series RLC...

Hey There are two questions asking me to identify the resonance structures for: SO4 two minus and H3PO4 (sorry, I don't know how to do subscripts) Could someone please explain to me how to do these resonance structures? Thanks.

Hi, I have a general question about resonance (specifically electrical). I have been working on a device dealing with this and I thought I might make sure I got the basics right before I continue. I have two scenarios that I'm hoping someone can help me out with: 1. There is a basic...

Hello Everyone, I have a quick and dirty question to ask. I have earlier posted about how to make a coil resonate at the Schumann resonance frequency (or multiples of if), and thank you all for your help so far. I thought I may as well tell you what I am trying to do here. I have an idea for...

Hello Everyone, I have a quick and dirty question to ask. I have earlier posted about how to make a coil resonate at the Schumann resonance frequency (or multiples of if), and thank you all for your help so far. I thought I may as well tell you what I am trying to do here. I have an idea for...

lets say a structure has 3 resonance structures, i konw that the atoms don't move, but i read somewhere that the electrons do...hmmm and that the resonance hybrid is most stable ofthe resonance forms?? I am confused, what exactly is resonance? in actuallity, isn't there no resonance , just...

Hello, consider a dihydrogen molecule in a powerful magnetic field and an x-ray that is hitting this molecule. Many things could happen in this case I think: compton effect, ionisation, electrons changing orbitals, nuclear magnetic spin state changing... My question is: can I be certain...

"An electric motor of mass 100 kg is supported by vertical springs which compress by 1 mm when the motor is installed. If the motor's armature is not properly balanced, for what revolutions/minute would a resonance occur?" I set my frame of reference at the end of the spring. Therefore, F =...

I've been reading about nuclear magnetic resonance, and one aspect is bothering me. (I haven't studied quantum physics yet.) Quantum mechanically, the proton has only 2 energy states: spin +1/2 spin and spin -1/2. In NMR, a pulse of electromagnetism is applied to alter the orientation of the...

A tuning fork is set into vibration above a vertica oepn tube filled with water. The water level is allowed to drop slowly. As it does, the air in the tube above the water level is heard to resonate with the tuning fork when the distance from the tube opening to the water level is 0.125 m and...

You have 2 pendulums attached to the same piece of horizontal string. One pendulum has a large mass, the other is small. They are both of the same length. The large pendulum is released from an amplitude and so the small pendulum resonates. The rate of exponential decay of the large...

I have been trying to figure out the acoustical resonant frequency of objects. I think their are engineering formulas that could be used. For example if you have a 1x1x1inch block square of iron, at what acousticaly resonant frequency would it be tuned to? I imagine the shape would have...

I am multi-tasking here, but the questions are all linked. It is interesting to note that the range of peak Schumann Resonance frequencies [the ionosphere] land right in the range of the peak amplitude EEG frequencies. I first noticed this by chance some time ago. I then noticed a related...

Does increase in velocity and/or mass increase the effect on an atom's resonance? I was thinking maybe the faster an atom travels in one direction the slower the atom would vibrate. Any thoughts on this matter?