Resonance Definition and 659 Threads

I have been up to make an impedance tube to measure acoustic Z and calculate absorption coefficient of materials . and having a sound generator(speaker driver) in it usually gives you near 60 hz response so your data will be charted starting 60hz and above. My goal is to measure from 20hz...

I have an airbox on a motorbike and want to find its frequency. I have two formulas: f = w / 2pi = 160 sqrt( 116.5 A / VL ) and f = ((343m/s) / 2PI) * SQRT( A / VL) A = Area of intake neck = 5.67cm^2 or 5.67x10^-4m^2 V = Volume of airbox = 2500cc or 2.5x10^-3m^3 L =...

I wonder how and where does resonance is applied in our real life. Any example?

Young and Freedman book Chapter 13 Periodic Motion: In the third papargraph, the author writes that since a damped oscillator naturally vibrates a frequency of omega-prime, then we expect that an application of a driving force with omega close to omega-prime will cause the amplitude to become...

Hi everyone, I've dealt with resonance (normal modes of a system) in a fair amount of detail, but it was in the context of a mechanics course. Now, I'm trying to extent this concept to electromagnetism, particularly LRC circuits, and I'm having a really hard time wrapping my head around it. I...

Homework Statement -a pipe closed at one end resonates with a turning fork at a length of 25cm. The next resonant length is 75cm. The air temperature is 11.6C. What is the wavelength of the sound produced by the turning fork. Homework Equations 1st harmonic: lambda = 4 * L 3rd...

Hey! I understand frequency calculations in tubes, open ended or closed, however what would you classify a tube ring? Imagine a rube ring brushing against something constantly, if the tube was static and it made contact with something, you'll get waves traveling around in both directions...

why is the current minimum in a parallel resonance circuit and how is the impedence calculated in these circuits and can someone please explain this statement ''at reasonance the branch currents (current through inductor and capacitor)may be much larger than the source current''HOW can that...

hey guyz i was just reading series resonance circuits and a read a confusing statement ''at resonance frequency the voltage drop across capacitor and inductor may be much larger than the source voltage'' how is that possible drop bieng greater than source voltage?

I have to fit a resonance curve to my data points, where the equation for the curve and the data points are: model = a/Sqrt[4 k w^2 + (v^2 - w^2)^2] data = {{242, 7/10}, {244.3`, 1}, {245.33`, 3/2}, {245.54`, 2}, {248.63`, 4}, {249.6`, 5}, {250.48`, 34/5}, {250.91`, 8}, {251.18`...

hey, i need help in solving the equation of a mathieu oscillator (ignoring damping) and showing how the condition for max parametric resonance is doubling of the natural frequency . ( got viva 2morro. I am so going to suck) D^2x + K(t)x =0 (Ko is the constant natural frequency when no...

Homework Statement Hello all, I am supposed to calculate the resonance wavelength by using the average difference between my measurements of each 1/2 wavelength. My data: Frequency = 2501 Hz (s^-1) Avg. difference of each 1/2 wavelength = 4.2625 cm Length of tube used to perform...

Homework Statement A 73.4 cm long guitar string of mass 2.21 g is placed near a tube open at one end, and also 73.4cm long. How much tension should be in the string if it is to produce resonance (in its fundamental mode) with the third harmonic in the tube? Homework Equations...

what is off resonance rapi frequency?

Homework Statement One end of a plastic tube, open at both ends, is placed into a large container of water. A 256 Hz tuning fork, continuously vibrating, is held over the end of the tube in the air and the tube is raised until maximum loudness is observed. The plastic tube is then raised...

I have two nuclear engineer related questions, please bear with me. 1. Why is hydraulic material (like water) is good to shield against neutrons? Why not high Z material like lead? 2. In cross section vs. energy of the nuclei, the curve of the graph undergoes 1/E relationship until it hits...

Homework Statement The Hungarian national highway M7 is made of concrete blocks 4m long. The joints have a small gap. Józsi have a mass of 80 kg. He owns a Polski Fiat, which is lowered by 10 cm when he sits in. At what speed would Józsi's car disintegrate? Homework Equations v =...

A tuning fork oscillates with simple harmonic motion described the equation: x = 0.00150cos(2770t) (where t is seconds) a) calculate the frequency in Hz of the tuning fork b) Suggest why only this tuning fork (taken from a set of 10 forks) gets louder when held above a glass bottle full...

Set-up Closed tube with a hole at each end. Microphone at one end attached to computer. Clap noise made at the other end which will produce a range of frequencies. The computer program detects the resonant frequencies and their amplitudes. The graph produced seems to show the lower resonant...

1. i have this science fair project coming up, and we had an idea to use acoustic levitation here is a link (http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/acoustic-levitation/") the problem is that i don't know what the resonance of air is in a wine glass. it says that i need...

In theory that means the effect of resonance in a system with mechanical vibration?

Beats and Resonance In the Beat not have friction force, correct ? m \frac{d^2x}{dt^2} + kx = F_o cos(wt) We can write as \frac{d^2x}{dt^2} + w_o^2 x = \frac{F_o}{m} cos(wt) If w \not= w_o Assuming (Particular solution) x_p = acos(wt) + bsin(wt) Why we have assuming this ...

Homework Statement A truck is traveling 70.0 kph away from you. The Driver is blowing a horn with a frequency of 400 Hz, air temperature is 25 degrees celcius.:rolleyes: Homework Equations doppler effect The Attempt at a Solution none

I don't find my notes right now, I'll try to use my memory on this. According to my notes, the impedance of an RLC series circuit is given by \frac{1}{\sqrt{R^2+\left ( \omega L-\frac{1}{\omega C}\right )^2 }}. So when in resonance, Z=\frac{1}{R} instead of Z=R. Also if I recall well, for...

Homework Statement The water level in a vertical glass tube (length 1 m) can be adjusted to any position in the tube. A tunning fork vibrating at 660 Hz is held just over the open end of the tube. calculate at what position of the water level will there be resonance (standing waves) in the...

Homework Statement The problem is to design a cantilever beam with a certain resonant frequency. Homework Equations w = sqrt (k/m) The Attempt at a Solution I know k for a beam and m can be written as density * volume. My question deals with the w. If I am given a...

Homework Statement A resonant current of 50mA flows in a circuit consisting of a 2mH inductor, 20 ohm resistor and 0.3nF capacitor all in series. What is the applied voltage? If the current is reduced to 30mA by changing the frequency but not the voltage, find the new frequency and the phase...

Homework Statement Ok, this is not homework, just something that's been bugging me and my tutor is unavailable(as usual) to help me. Why does increasing the mass of a system lower its natural frequency, like adding a concrete block to a washing machine. Come to think of it, I'm not even too...

The resonating frequency of a series LC circuit is given by: f=(c/2πn)[(dD/Aa)^1/2] This frequency measured in a moving frame is same and hence c is concluded to be constant but the distances and areas may change due to length contaction and the values of inductance and capacitance should not...

I was asked to draw the resonance structure of nitrous oxide and given some bond length. So i need to eliminate non-probable resonance structure for nitrous oxide. I was able to draw three structure but how do we use the bond length to liminate non-probable resonance structure for nitrous oxide?

Homework Statement Is there a resonance in H2CO3 ? Why ? and Why not ? Homework Equations The Attempt at a Solution

I was just wondering if would be possible to tune into this frequency? Has anyone ever attempted it?

What exactly is a resonance frequency? I just want to understand what it is, I can solve for it but it's no use if I have no idea what it is.

For a vibrations lab experiment, our group decided to determine the resonance of 3 wines glasses, conical, cylindrical, spherical. I know that on Wikipedia they have these equations. What they don't have is how they derived them. I would like to know the math behind these. I've tried searching...

Homework Statement Hello, I'm working on a semester project a measurements class at my college. We are measuring the affects of different materials on the resonance of chambers. We are testing two chambers, one in the shape of a rectangular prism, one in the shape of a cylinder. We will be...

I have just started to study resonance and I don't quite understand what it is. My textbook says: "All objects vibrate with a characteristic "natural frequency". When an object is forced to vibrate at its natural frequency, the amplitude of its vibration can grow very large. This effect is...

Homework Statement You have an inductor that you are planning to use in series with a variable capacitor C in the tuning section of a radio. Neglect the internal resistance of the inductor. (a) If you have a fixed inductance L = 3.4 mH, find the maximum and minimum capacitances the variable...

I am trying to understand the theory behind nuclear magnetic resonance. I have been reading various explanations (some more detailed than others) but I still have several holes in my understanding and I hope that some of you can help clear them up. I realize there are quite a lot of...

Dont have to be mean?

When a forced oscillation is damped, it is true that the frequency at which resonance occurs decreases right? so does this mean that the natural frequency has decreased too or does it only mean that resonance does not occur at natural frequency when being damped?

Homework Statement The amplitude of a driven harmonic oscillator reaches a value of 25.0Fo /m at a resonant frequency of 380 Hz. What is Q? Homework Equations Q=m(wo)/b Q=wo/(\Deltaw) w=2\pif wo= (k/m)^1/2 w'=(w0^2-y^2)^.5 y=b/2m The Attempt at a Solution...

Homework Statement The amplitude of a driven harmonic oscillator reaches a value of 25.0Fo /m at a resonant frequency of 380 Hz. What is Q?Homework Equations Q=m(wo)/b Q=wo/(\Deltaw) w=2\pif wo= (k/m)^1/2 w'=(w0^2-y^2)^.5 y=b/2m The Attempt at a Solution Honestly, I don't know where...

I'm having problems filtering out certain frequencies from others with a series LC filter. I have a 1.923 Henry DC filter choke inductor set in series with a 0.1 micro Farad capacitor. I send the signal through the inductor to the capacitor and output from the other side of the capacitor. I'm...

Homework Statement I am just confused on what is residues and resonance in a differential equation problem? Can anyone give me resources on the web where I can study this? Homework Equations The Attempt at a Solution

can someone help me with this question? Draw the most important resonance contributor of the following structure? if its to small http://img196.imageshack.us/img196/8417/48084902.jpg

Can someone please explain to me how resonance can be induced into the electrons of an atom using pulsed electrical fields? Can this also be done using photons of a specific wavelength?

Hello friends Q1. Is that Resonance only happened in series circuit not in parallel, which are consisting in R L C components? Q2. what Is Q-Factor and is that Related with Resonance. Please Must Explane this questions :redface: thanks A lot

What is resonance when it comes to molecular structure? I understand that the concept of resonance arises when there is more than on possible lewis structure. However, everything I read says the atoms don't oscillate between structures and that in fact, they assume a constant shape. My...

Homework Statement The sine wave sin(t) will only drive the harmonic oscillator y'' + \omega ^2 y into resonance when \omega = 1 . For what values of \omega will the half- and full-wave rectified sine waves drive the harmonic oscillator into resonance. Homework Equations The...

"At resonance frequency, the circuit impedance is maximum. It is resistive and its value is given L/Cr..." The book doesn't explain how impedance equals L/Cr, so I'm confused here. How is it derived?