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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,870 
the solution for current I, for series LCR circuit is
I = (E/Z)sin(wt+\phi)
Where Z = \sqrt{R^2 + (X_{L}X_{C})^{2}}...

Jul2409 05:30 PM
Bob S

3 
6,227 
Hello everybody...
In my school textbook, I have the following explanation to Damped SHM:
\hline
Soving the...

Sep1004 07:01 AM
DivGradCurl

9 
1,826 
I am attempting to derive the equation for dampened harmonic motion from the differential equation:
m\frac{d^2...

Apr1309 04:25 PM
arildno

10 
2,671 
When a forced oscillation is damped, it is true that the frequency at which resonance occurs decreases right? so does...

Oct709 08:04 AM
FredGarvin

6 
25,379 
Hi
I'm looking for a place were I can find the damping coefficient for water. Maybe someone has/can find/knows a...

Aug709 02:55 PM
nasu

5 
14,233 
Hi,
I am working on a problem with a free hanging mass attached to a spring and damper in parallel. I believe my...

Jan1409 11:01 AM
skeleton

2 
5,641 
A 2.20 kg mass oscillates on a spring of force constant 250.0 N/m with a period of 0.615 s. Find the damping constant...

Feb210 04:55 PM
tyler.brown

0 
1,251 
A 0.300 kg mass moving the end of a spring with force constant 2.50 N/m is acted on by a damping force F=bv. If the...

Feb210 05:13 PM
tyler.brown

0 
766 
The position equation for a oscillator undergoing critical damping is given by
x(t) = Ate^(γt) + Be^(γt)
where...

May3014 10:18 AM
vanhees71

1 
177 
Hi, my question is about determining the damping ratio for the upper springdamper part of the system given in the...

Dec109 12:11 PM
SystemTheory

1 
2,785 
I have a transfer function for system.
23.23*s + 1.421
 = tf
s^2 + 25.88*s +...

Jul1010 10:02 AM
stevenb

2 
2,863 
Typically photon attenuation is determined by the equation I = I_0 \cdot e^{  (\mu \cdot z)}. The variable mu is...

Sep805 03:57 PM
ehild

5 
1,092 
I've got data that's force (g) against time for an SDOF system (with a bit of noise). The main thing I'm interested in...

Nov811 07:14 AM
AlephZero

1 
1,286 
Hello All,
I have some basic damping related questions that I am hoping you all can shed some light on or suggest...

Nov612 03:44 AM
K^2

5 
908 
Unfortunately, magnetic fields are by their nature invisible, but scientists from NASA’s Space Sciences Laboratory...

Jun308 11:37 PM
SF

2 
1,558 
Today I was outside to get some grass for my rabbit. I took some yellow dandelions too, but as I entered the elevator...

Apr1308 06:39 AM
Tachyonie

3 
1,579 
hi,
recently i notice that there is a dark border around all the streetlight at night. what is this phenomenon...

Feb1114 05:55 AM
Simon Bridge

2 
206 
I am doing a lab for my optics class. My group has chosen to set up a simple dark field imaging device using a HeNe...

Mar1109 07:47 AM
Andy Resnick

1 
831 
I was working on some dark field filters and I was wondering if you could substitute the black spot in the centre of a...

Apr709 06:28 PM
Andy Resnick

3 
939 
Hi, I've been doing Fraunhofer diffraction and I have been getting dark spots in the middle if my patterns, not...

May611 08:37 PM
Redbelly98

3 
821 
Hi Everyone,
I am trying to calculate the exit velocity of a dart which is propelled by compressed air. Please see...

May2312 06:38 AM
haruspex

1 
934 
does dB increases when voltage increases?can sum1 state or declare a formula or proof?

Feb2510 12:53 PM
Bob S

1 
2,000 
DC doesn't cause electromagnetism? That is what our teacher says. Can anyone explain why it doesn't? As far I remember...

Nov1109 02:59 PM
Dadface

11 
1,347 
To increase a DC generator's turning effect, we increase the number of turns of the coil. How does this increase the...

Sep2912 04:51 PM
Philip Wood

1 
1,344 
Hi, I have a question related to the DC motor that i hope you geniuses can help me with.
By Fleming's Left hand...

Sep2312 12:58 PM
sgstudent

6 
878 
Another intersting point on home electronics raised was  why does every device you purchase have it's own...

May1305 03:40 PM
zoobyshoe

39 
3,421 
hello ,
DC (I guess AC too) power supplies have 3 terminals: plus, ground, minus.
If I set the voltage to 30...

Sep2808 12:03 AM
Phrak

3 
9,121 
Hello, can someone please help me out here, i want to step up the voltage of a 1.5V battery to 300V, i know that to do...

Dec1207 03:53 PM
alvaros

1 
1,789 
de broglie wavelenth of a perticle approaches zero faster than 1/v as its speed approaches the speed of light..how can...

Oct809 02:02 PM
hasanhabibul

0 
597 
In order to understand about DeBroglie's explanation on Bohr's second postulate,concept of standing waves should be...

Apr1813 07:23 AM
Philip Wood

2 
1,044 
My textbook says that dETdS+PdV<0 for all irreversible processes. However, for reversible processes, the author says...

Jul1212 10:54 AM
Studiot

21 
1,283 
Are elemental particles subject to entropy? Are there dead electrons "no spin".

Dec711 03:18 PM
mathman

6 
1,277 
The noslip boundary value constraint for NavierStokes solutions was explained in my fluid dynamics class as a...

Apr3012 09:33 AM
Andy Resnick

1 
1,045 
Hi,
I've been trying to figure out a formula which describes the relation between the area, load and negative psig...

Jul2007 12:29 PM
deimors

2 
1,454 
Firstly, I'd like to announce that this is not a homework question, it is an example of a problem I thought up to...

Apr1009 04:24 PM
arildno

3 
2,043 
My question is what causes death wobble? Let me explain more...
The vehicle I've experienced this on is a Jeep with...

Aug2209 04:03 AM
rcgldr

19 
16,127 
Helloooo. I'm debating a creationist and he consistently is bringing up the laws of thermodynamics to try and 'prove'...

Jan406 08:03 AM
Doc Al

17 
2,954 
Just a question:
I do know it is possible to have a debye layer in a electrolyte. But is it posible to have a Debye...

Jul1506 12:24 AM
Clausius2

2 
4,888 
Hello, I am new here.
I was reading Wangsness electromagnetic fields and he delves into a short discussion about...

Aug1514 07:14 PM
Greg Bernhardt

1 
259 
Hello,
Here's my challenge: I want a physics model for how one would go about in order to decay the moon's orbit....

Dec213 09:45 AM
BruceW

10 
1,185 