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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,704 
If you stop cooling a resistor and stop current simultaneously then what happens to the temperature of the resistor in...

Apr214 03:05 AM
256bits

2 
165 
I'm wanting to get the time it would take a vehicle to travel a 1/4 mile coming out of a corner in the ideal world. By...

Apr114 06:06 PM
RedRook

17 
385 
I am trying to use thermodynamics manipulations in order to find \partialP/\partialV (at constant entropy) I tried...

Apr114 04:35 PM
rude man

1 
175 
I am doing a final year project, my Prof gave me 2 prism.
He wants me to do so:
A white laser is shot on a prism...

Mar3114 10:18 AM
athrun200

5 
188 
If I have a pair of coils connected in an antihelmholtz configuration, with current flowing oppositely in both, and I...

Mar3114 09:49 AM
UltrafastPED

16 
231 
On the 2012 AP Physics C Mechanics test, I got confused by the sign conventions for torques on question 3....

Mar3014 11:59 PM
Simon Bridge

1 
168 
I was wondering where the derivation of the formula
Group Velocity = Phase Velocity + K(dVp/dK)

Mar3014 01:55 PM
UltrafastPED

1 
155 
What happens To the force between 2 charges if a metal sheet or a dielectric sheet is kept in between the two charges...

Mar3014 01:52 PM
UltrafastPED

1 
138 
suppose a solenoid has N turns
What is the Flux through the Solenoid?
similarly if a coil has N turns , what is...

Mar3014 08:25 AM
K Dhiraj Bhak

2 
187 
Is there a mathematical relation for the temperature change when a fluid flows through a pipe from one end to another?...

Mar2914 10:28 PM
Jay_

16 
476 
How can I figure out how to calculate the heat/cooling exchange rate of water inside pex tubing? I want to build a...

Mar2914 08:11 PM
Equinefencer

18 
3,549 
Hello,
Question is about equation 5.71 to5.72
All that was done is algebra or trigonometry?
Where do I...

Mar2914 04:22 PM
knockout_artist

5 
393 
Hello,
I'm currently working on simulations in Solidworks of the flow of air (v = 450 m/s)
around a sphere (radius...

Mar2914 03:48 PM
boneh3ad

1 
151 
The period of a satellite revolving around the earth earth at surface height is equal to the period of any mass thrown...

Mar2914 07:26 AM
Ezio3.1415

3 
266 
First post here. This question has two parts. (1) Connecting the dots between the ImpulseMomentum Theorem and the Law...

Mar2914 02:16 AM
jstad

2 
223 
Hello,
Are spectral reflectance curves dependent on the interface between the reflector and surrounding medium? For...

Mar2814 11:50 AM
Andy Resnick

1 
178 
Recently I am reading the papers in the field of PT symmetry systems. What I am confused is that in these papers,...

Mar2814 02:16 AM
UltrafastPED

1 
151 
On page 122 of Born and Wolf's "Principles of Optics" the following equation for the trajectory of a ray of light is...

Mar2814 12:45 AM
PhilDSP

6 
265 
I'm trying to understand why a superdeformed nucleus may be represented as bulging perpendicular to the axis of...

Mar2714 11:05 PM
D H

40 
927 
I'm having a hard time understanding why the electric potential halfway between two equal but opposite charges is 0....

Mar2714 09:23 PM
ZapperZ

6 
190 
Im confused by a concept i have run across in Griffiths electrodynamics.
E_{out}  E_{in} =...

Mar2714 12:04 PM
vikasagartha

1 
123 
Homeopaths assert that dilution of a medicinal substance in a water alcohol mixture, followed by forceful shaking...

Mar2714 11:29 AM
Vanadium 50

3 
213 
If I needed to calculate the kinetic energy of a bar suspended by a rope at one of its ends, in other words, a bar...

Mar2714 11:28 AM
rmfw

6 
280 
Consider the Helmholtz Equations with a perturbation p(r)
u(r,w) = 0
Does anyone know where I can find resources...

Mar2714 12:44 AM
sugeet

1 
264 
Hello everyone,
I am having a little difficulty understand precisely what Gibbs free energy is. I have read in my...

Mar2714 12:25 AM
Andrew Mason

1 
168 
Hi I am pretty confused on how my book is doing the calculus of electric fields. Basically I don't understand how...

Mar2714 12:14 AM
Bashkir

1 
165 
I am currently working on my masters and happened to stumble upon screw theory, of which I have no previous experience...

Mar2614 06:49 PM
Liferider

6 
280 
Hello,
I've been making my way through LandauLifshitz's "Mechanics" book, and I've come across a bit of math I'm...

Mar2614 02:55 PM
electricspit

9 
241 
I am really loving this book. But I have come across a figure whose purpose I just don't understand. It is shown when...

Mar2614 02:53 PM
TSny

4 
364 
Initially the pings from Malaysian airlines flight MH370 could only determine the distance of the aircraft from the...

Mar2614 11:33 AM
nsaspook

19 
798 
Let's say that we have a system of noninteracting Bosons with singleparticle energies given by,
\epsilon_{p,m} =...

Mar2614 09:55 AM
vanhees71

2 
166 
I am doing a simple steel ball drop test on glass to see if the glass passes the standards.
We are dropping 1.18...

Mar2514 09:54 PM
Tlowe999

8 
4,652 
Hi,
I am taking a highschool physics course, and there are a few points at which I am getting a bit of confusion.
...

Mar2514 08:15 PM
stfz

3 
346 
Hi,
I understand that vapor pressure is independent of initial pressure, and depends only on temperature.
...

Mar2514 10:04 AM
Chestermiller

22 
360 
If A exerts some force on B then it experiences a force of same magnitude and in opposite direction. This didn't seem...

Mar2514 03:04 AM
Rishavutkarsh

8 
314 
Do the speed of the ripples, or waves, in a pond depend on the weight of the pebble thrown into the water? I would...

Mar2414 11:35 AM
leeone

2 
219 
How can momentum always be conserved while kinetic energy is lost when the collision is inelastic? Since there is a...

Mar2414 01:57 AM
Andrew Mason

11 
459 
I am reading through the Feynman lectures in my spare times (the parts that interest me, anyway). The book and it's...

Mar2314 06:20 PM
Simon Bridge

5 
290 
i have L of particle m in 1D motion, but how i can find the coordinate of particle x at time t??????

Mar2314 12:02 PM
UltrafastPED

1 
154 
I am looking for the e.o.m. of a particle moving inside a sphere of homogeneous dust with density ρ. I start with the...

Mar2314 04:38 AM
tom.stoer

1 
164 