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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
45,661 
So what if we have two thick lenses?
Thanks in advance ,

May2914 06:46 AM
UltrafastPED

1 
175 
Why change of magnetic flux with the time through a coil induces current in it?
Please tell me that what happen to...

May2914 05:01 AM
siddharth5129

5 
268 
Hey, I don't if this is the right place to ask ( it is not a homework question but just a curious one about what i...

May2914 03:06 AM
siddharth5129

7 
252 
This question is about push bikes, but could be applied to anything with a versatile engine and a gearing mechanism.
...

May2914 01:39 AM
A.T.

3 
220 
Hello,
Im a student and I try to design a valve connected to a tank. However I have some troubles to define the...

May2814 06:53 PM
Chestermiller

1 
186 
Hello,
I need some help understanding Bernoulli's principle, flow rate, velocity and pressure.
I understand...

May2814 11:27 AM
siddharth5129

3 
349 
Hi
I am new to this forum. I am an amateur blacksmith/machinist/all around tinkerer. I took a class with a...

May2814 07:33 AM
Nugatory

4 
192 
When thinking of a spherical shaped particle moving about under Brownian motion, one describes its motion by...

May2814 07:11 AM
Steve Drake

2 
218 
Initially the pings from Malaysian airlines flight MH370 could only determine the distance of the aircraft from the...

May2714 10:39 PM
nsaspook

29 
1,925 
I am going through Mary Boas' "Mathematical Methods in the Physical Sciences 3rd Ed". I finished the chapter 3...

May2714 08:43 PM
kq6up

4 
234 
I was wondering how could I hold a lot of charge inside, for example, a ball. I thought by wrapping it in an isolant...

May2714 08:34 PM
UltrafastPED

1 
200 
Hi, I am trying to resolve a force into xyz components and I think I'm getting a bit confused.
When viewed face on...

May2714 07:03 PM
LukaD

4 
200 
I was solving a static electricity/electric field problem and I came across with one saying earth has an electric...

May2714 04:56 PM
sophiecentaur

7 
383 
Hello there, I have a problem that I've been trying to solve for some time now and I find myself struggling.
I am...

May2714 03:56 PM
mattt

1 
145 
I am aware that when charged particles accelerate or decelerate, the particle will emit a certain amount of radiation....

May2714 02:05 PM
Prince Rilian

2 
181 
What is the smallest amount of electricity (volts, amps?) required in order to create a magnet capable of spinning a...

May2614 05:21 PM
TheAzn

2 
206 
Both of these represent waves moving in the $+x$ direction. I have seen both used in Howard Georgi's book on waves and...

May2614 03:51 PM
122520253025

6 
320 
My question is simple: Why do batteries need electrolytes? Wouldn't the battery need the charge to flow only through...

May2614 02:36 AM
DrDu

3 
312 
Hi, have searched around but can't find what im looking for (probably because im not entirely certain what its called)...

May2514 02:09 PM
Jorriss

5 
303 
I read that Jones matrices can descibe optical devices with polarized light. They are 2 by 2 matrices.A basis can be...

May2514 01:37 PM
UltrafastPED

5 
265 
Hello,
I have been selflearning Thermodynamics and I am having a bit of trouble with calculating the work in...

May2514 09:20 AM
dauto

4 
261 
I have tried to search everywhere, but cannot find answer to this: does anyone know if there is a table etc. of what...

May2514 08:46 AM
Simon Bridge

1 
169 
Yeah sure, change in speed of light as it travels from one medium to another. But why does it affect the path? I mean,...

May2514 06:16 AM
Manraj singh

17 
546 
Let's say I have a magnetic ball within a solenoid that has current passing through it. How would I calculate the...

May2414 10:19 PM
Integrated

4 
213 
So I'm not OK with how some people derive this equation.
These people consider a pipe whose endings have...

May2414 05:25 PM
rcgldr

20 
536 
how much energy is gained by an electron in a battery?

May2414 04:14 PM
jtbell

4 
247 
I saw an example of a hypothetical EM wave that had constant E and B fields. Is that possible? How would it be...

May2414 09:15 AM
vanhees71

11 
465 
When a wire has current I in a magnetic field B, there is the Lorentz force is it considered a conservative force or...

May2414 09:07 AM
vanhees71

30 
740 
What's a feasible design for a garden ornament that would give the illusion of a butterfly hovering around a flower...

May2414 08:31 AM
UltrafastPED

2 
203 
I need to find the correct voltage to apply to a wire grid in order to repel a plasma of which I know the density...

May2314 07:03 PM
UltrafastPED

1 
263 
Hello everybody ,A friend of mine told me that best way (The most accurate) to do this is grating diffraction...

May2314 07:42 AM
UltrafastPED

2 
239 
I was just wondering how the kinetic energy in, for example, a car undergoing circular motion is constant. We know...

May2314 07:21 AM
Doc Al

10 
269 
Can someone help me see why the partition function is constant under adiabatic changes?
S=const. entropy...

May2314 07:20 AM
kuecken

0 
143 
Hello everyone , I googled for it but nothing came up, Where can I find that?
Thanks in Advance ,

May2314 03:39 AM
DrClaude

5 
226 
Hi!
How shall I correctly describe the velocity, as function of time, for an object put in a stream of e.g. water?...

May2314 03:21 AM
A.T.

5 
312 
I've been trying to work out the forces on a car in circular motion around a turn and I'm having trouble understanding...

May2314 12:26 AM
Arcani

6 
365 
My professor, in his handout (picture below), says the following about this diagram :
I disagree with him...

May2214 06:17 PM
elemis

1 
206 
I recently have discovered that the thermodynamics term "adiabatic" seem to be used slightly differently in Britain...

May2214 05:42 PM
Philip Wood

11 
491 
Hi everybody ,Why arrangement of colors in higher order of diffraction is different from order 1 , 2 ?
Thanks

May2214 02:07 PM
jtbell

2 
175 
I've been wonder something about coriolis force.
Well... when we consider motion of projectile on earth, we have to...

May2214 11:53 AM
UltrafastPED

2 
177 