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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,841 
Hi all
I'm doing a project for energy efficient buildings with thermal insulation.(Just a leisure project and im...

Nov712 06:05 AM
sriram123

4 
1,200 
I am going to create a model, with two heatsources closely spaced (Cables with a current) Covered with dirt and at a...

Nov712 03:34 AM
nicklasaau

1 
631 
It is ussually thought that if you receive a shock touching only one cable is because you are not well isolated from...

Nov712 03:25 AM
rcgldr

5 
7,584 
For every force exerted by object A on object B, an equal and opposing force is exerted by object B on object A.
I...

Nov712 02:56 AM
Fredrik

4 
1,633 
The equation
v22 = vo2 + 2aΔy
is used to determine the change in position, acceleration, or velocity of a...

Nov712 12:46 AM
Simon Bridge

4 
1,032 
Hello, I am working on a project regarding truss analysis on a plane and I need to find all the forces acting on the...

Nov612 02:52 PM
A.T.

4 
1,026 
Imagine two cylinders in which one cylinder in within another.(Please refer attachment)
The annular space between...

Nov612 10:21 AM
nasu

2 
941 
I have a lot of confusion and I hope someone can help me in clearing my doubts.
considering a right cylindrical...

Nov612 08:53 AM
A.T.

1 
884 
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 
Hi,
A parallel plate capacitor is charged from fixed voltage, after I cut voltage source.
Now, what's happened if...

Nov612 01:32 AM
Gh778

44 
2,524 
Imagine an electric field created by a electricity running through a looped wire. Leaving all other variables exactly...

Nov512 07:44 PM
Bobbywhy

1 
688 
is it possible to harness the lightening to get electricity.

Nov512 07:41 PM
Bobbywhy

5 
694 
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 
526 
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 
939 
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 
695 
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 
1,591 
Somebody slept through their lecture on resonance.
I don't know how to link video.
...

Nov512 03:03 AM
A.T.

1 
648 
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 
731 
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 
1,159 
1. Can you tell me the name of two particles having zero force of gravitation between them ?

Nov412 01:49 PM
mrspeedybob

2 
722 
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 
2,447 
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 
1,017 
I am reading the book of Neuenschwander about Noether's Theorem. He explains the EulerLagrange equations by starting...

Nov412 10:44 AM
vanhees71

1 
673 
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 
741 
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 
1,295 
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 
833 
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 
2,488 
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 
1,910 
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 
606 
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 
1,786 
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 
973 
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 
526 
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 
479 
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 
645 
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 
2,154 
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 
560 
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 
1,397 
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 
840 
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 
1,575 
Hello friends... Please answer to this question…
Lowest possible temperature is 2730C. Why?

Nov112 07:17 PM
Rap

14 
1,813 