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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,837 
Imagine an electric field created by a electricity running through a looped wire. Leaving all other variables exactly...

Nov512 07:44 PM
Bobbywhy

1 
643 
is it possible to harness the lightening to get electricity.

Nov512 07:41 PM
Bobbywhy

5 
659 
I was wondering if anyone had any insights on how to estimate or discern the potential drops across a capacitor...

Nov512 12:02 PM
Sancor

1 
492 
An N45 Grade Neodymium Rare Earth magnet has a remnance (Br) of 1320 mT and Coercive force (Hcj) of 923 kA/m.
I am...

Nov512 11:32 AM
nasu

2 
843 
i have read an example on electrostatics that if anyone rub a rubber comb and wool , the rubber comb acquires the...

Nov512 09:15 AM
Meir Achuz

1 
640 
1. An object of unit mass moving with unit speed applies unit force to any object when the two collide. True or False?...

Nov512 08:32 AM
Chestermiller

23 
1,454 
Somebody slept through their lecture on resonance.
I don't know how to link video.
...

Nov512 03:03 AM
A.T.

1 
606 
Hi I'm trying to balance any 3d system with various fixed weights by selecting the correct lift forces for points of...

Nov412 06:39 PM
LordSimpson

4 
680 
if see a candle light you find the flame moving up.heat moves by conduction, convection
ans radiation. a teapot with...

Nov412 02:38 PM
russ_watters

4 
1,092 
1. Can you tell me the name of two particles having zero force of gravitation between them ?

Nov412 01:49 PM
mrspeedybob

2 
681 
Hi, I'm new to this forum.
So I do not understand how, in an inelastic system, momentum is conserved.
Consider...

Nov412 01:45 PM
rcgldr

18 
2,122 
Hi.
Imagine an imaginary car with a huge windmill on top connected to its enginator. Assume windmills and enginator...

Nov412 01:42 PM
A.T.

13 
940 
I am reading the book of Neuenschwander about Noether's Theorem. He explains the EulerLagrange equations by starting...

Nov412 10:44 AM
vanhees71

1 
613 
Ok,so John Taylor's Classical Mechanics has this small subtopic "energy interactions between 2 particles".And,in...

Nov412 09:19 AM
bp_psy

1 
684 
Hi.
Can you clarify for me the equation for gforce below:
F= ma + mg
I got this equation...

Nov412 07:22 AM
AJ Bentley

2 
1,128 
Hi.
I just wanted to know is there any limit to the amount of heat energy that a body can store in itself? For...

Nov412 04:43 AM
AJ Bentley

6 
752 
I believe this is pretty standard.
Given a mass m on a spring with spring constant k, a solution to the second...

Nov312 11:45 PM
Hetware

25 
2,197 
In my experience, a heavier sled rider always goes faster than a lighter one (given the same sled design). When...

Nov312 06:54 PM
Jespermj

15 
1,625 
Hi there. I'm trying to consider a system in which you have an electric field applied by a capacitor over two media,...

Nov312 05:54 PM
DrZoidberg

2 
545 
The title is pretty selfexplanatory. I know the speed of the falling magnet is much slower in a copper pipe, but...

Nov312 12:52 PM
FeynmanIsCool

6 
1,589 
As i understand it, the Maxwell equations in potential form (in the Lorenz gauge) are basically 4 independent wave...

Nov312 11:21 AM
waveandmatter

5 
878 
How could I calculate the analytical form of all the normal modes of a triangular membrane?, asuming the membrane is...

Nov312 10:55 AM
Jhovannoty

0 
486 
Hey guys,
I'm new to this forum so I'm sorry if I posted in the wrong thread. So we did these experiments with van de...

Nov312 08:38 AM
AJ Bentley

1 
441 
Okay there is a particular equation in my book, which I just can't seem to understand intuitively. I've been staring...

Nov212 11:46 PM
pabloenigma

1 
587 
I am reading Jackson's electrodynamics book. When I went through the Legendre polynomial, I have a question.
In the...

Nov212 09:00 PM
Meir Achuz

2 
1,977 
Hello,
does anyone know how to determine the PSF (point spread function) of an optical system? It would be ok also...

Nov212 02:48 PM
mnb96

0 
486 
Two permanent magnets are on the table some distance apart and having some arbitrary orientation relative to each...

Nov212 11:53 AM
tris_d

12 
1,232 
Basically I would like to know how to expand:
\left\langle(N  \left\langle N \right\rangle)2\right\rangle
<(N ...

Nov212 11:15 AM
mfb

6 
772 
Suppose we have a rod standing vertically and then slightly disturbed so it begins to fall. After it falls through...

Nov212 06:27 AM
tinytim

7 
1,412 
Hello friends... Please answer to this question…
Lowest possible temperature is 2730C. Why?

Nov112 07:17 PM
Rap

14 
1,525 
Suppose we consider a car moving on rough road in forward direction, wheels rotating clockwise.
Since wheels rotate...

Nov112 06:38 PM
sophiecentaur

5 
1,059 
Hi
I am doing a project on folded waveguides and I am reading some IEEE papers for literature review. I always...

Nov112 12:12 PM
shpongle

2 
569 
I am trying to self learn kinematics , but i don't understand a certain concept :
If a string hold a mass...

Nov112 10:12 AM
arildno

1 
907 
Can we define specific heat capacity for an adiabatic process ??
Would it always be zero since dQ is 0 for an...

Nov112 12:49 AM
Andrew Mason

2 
2,104 
Hi,
I am having some difficulty doing the integral
∫d^{3}v1d^{3}v2  \overline{v1}\overline{v2}, where...

Oct3112 11:11 PM
babylonia

4 
605 
So I have derived a formula for the range of projectile in a vacuum fired from an arbitrary height h from above the...

Oct3112 08:29 PM
FallenLeibniz

3 
693 
I have an incline A that is very steep reaching a vertical height of h and another one B which is less steep with the...

Oct3112 07:32 PM
haruspex

5 
1,201 
I would like to calculate the energy need for move in the black volume in gas (move in from r2 to r1), when gas is...

Oct3112 05:34 PM
lba

15 
2,690 
I recently read about the communication blackout during a spacecraft reentry.. The reason given was the high density...

Oct3112 10:02 AM
AJ Bentley

1 
706 
Hi everyone.
I am a programmer and I think some basic physics will help me to achieve something I wanted to do.
...

Oct3112 07:50 AM
cubud

5 
988 