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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,712 
Hi
I have a question I need help with.
Im trying to find out how much forces that a pouch (balloon) creates on...

Aug3009 06:26 PM
Astronuc

3 
708 
we know...when a source is running towards the listener...the wavelenth of sound become small and number of waves...

Aug3009 04:40 PM
Senex01

1 
644 
This must have been posted on here before, but I can't find any reference to it.
I've had to learn a little...

Aug3009 02:46 PM
Senex01

57 
2,947 
Okay, I'm sure I must have overlooked something very trivial, so please help me with this:
Two parallel infinite...

Aug3009 02:04 PM
Preno

2 
658 
Ive been studying basic mechanics lately and have been trying to understand what "force" really is. First off, heres...

Aug3009 01:40 PM
tinytim

10 
1,538 
I'm having a research topic regarding wave train problem, i read from the book stating that phaseshift could probably...

Aug3009 01:02 PM
danong

0 
412 
we know velocity of sound through a matter is v=root(elastic constant/density) according to newton. suddenly it comes...

Aug3009 11:35 AM
Doc Al

1 
664 
An electronic circuit that produces electromagnetic waves in the visible light range, would such an experiment be able...

Aug3009 11:23 AM
Count Iblis

4 
1,156 
dear revered members,
could u people let me the know the role of capacitors in the ignition system of automobile...

Aug2909 06:57 PM
fleem

42 
9,050 
Hi!
I've been looking at Mohr's circle and by and large I understand what's going on. I can see how if the...

Aug2909 04:06 PM
Adder_Noir

2 
2,636 
Can anyone help me with this, i have done the first part, whereas i have obtained B using ampere's law. But changing...

Aug2909 02:25 PM
Vanadium 50

2 
1,450 
Okay so i just want to make sure i got this right because its a kind of confusing topic for me. So eddy currents are...

Aug2909 02:10 PM
DrDanger

6 
819 
I came across this from a book saying that:
If all the coordinates and velocities are simultaneously specified, it...

Aug2909 01:16 PM
Bob S

4 
705 
Hy, i am back with my annoying questions about this and that. Could everyone tell me why the frigging dipole have an...

Aug2809 10:09 PM
maverick_starstrider

4 
731 
what is the meaning of deceptivness of field line??
i mean for 2d surface field line = n/2pi*r (f.l. inversly...

Aug2809 10:04 PM
buffordboy23

3 
587 
My book (an old copy of HallidayResnick) gives a proof for the fact that the wave velocity is constant in...

Aug2809 09:24 PM
Born2bwire

3 
2,197 
Hi,
I am trying to calculate the power of a reflected electromagnetic field and can't find a physical explanation...

Aug2809 09:12 PM
Born2bwire

1 
1,271 
Hello, my name is James Dallas and am new to this forum. I am a first year electromechanical engineering student in...

Aug2809 07:44 PM
jamesdallas

0 
2,098 
Hello physics forum,
I'm interested in modeling the pressure wave created due to the rapid inflation of a balloon. ...

Aug2809 03:00 PM
Bob S

2 
1,588 
if we take a magnet and put in space, now we take another magnet and start to revolve it around the first, the...

Aug2809 09:27 AM
RestlessMind

15 
2,735 
Alfven's theorem:
The change of flux through any closed loop moving through a magnetic field of conducting material...

Aug2809 05:32 AM
WiFO215

10 
1,020 
How do you add air resistance to these 2 equations?
#1 sqrt(2 * d / g) = time until impact
#2 sqrt(2 * d * g) =...

Aug2809 02:09 AM
spaceshipone

13 
21,054 
I've been getting confusing explanation on what negative voltage represents. In electrolytic cells my teacher explains...

Aug2709 11:50 PM
Red_CCF

32 
9,343 
Hello ppl,
I'm new here.
I'm trying to compute RK4 for Nbody problem. But after computing I'm getting strange...

Aug2709 06:32 PM
albatros

0 
1,898 
Hy folks! I am new in here.Anyone can give a basic intuition about why the acceleration formula actually works? I...

Aug2709 05:26 PM
staetualex

5 
697 
There is a rod treating as rigid body, the rod which mass is m and lenghth is R rotate about one end of itself with...

Aug2709 03:56 PM
redoxes

11 
1,019 
I thought of what seems to be a very classical problem but I can't find a solution for it.
At t=0 you have a sphere...

Aug2709 03:54 PM
PhaseShifter

1 
745 
Hi and thanks in advance for any help with this problem.
If I have a very very well insulated tank of water of say...

Aug2709 09:15 AM
stoody

4 
5,903 
i was reading the book of Griffin  introduction to electrodynamics. it is written that the force of charge q on Q is...

Aug2709 07:53 AM
jtbell

7 
1,093 
Like a radioactive particle emit rays, does this similar to the field lines of a charged particle?
at what speed...

Aug2709 07:22 AM
DaleSpam

8 
768 
While reading a very interesting article/lecture called Life at Low Reynolds Number, there was a reference to a...

Aug2709 01:12 AM
Vanadium 50

2 
1,145 
Hi guys, I'm going through Reif's book on statistical mechanics and have a question on the parameter omega, the number...

Aug2609 11:30 AM
Sam_Goldberg

2 
5,358 
Waht is the work done by friction when a man is walking? zero or nonzero?
I was analysing the work done by...

Aug2609 11:10 AM
vin300

21 
2,926 
I have heard many times that the positive "inductive" part of a circuit's reactive power is equal to "L i di/dt".
I...

Aug2609 02:14 AM
bjacoby

1 
11,331 
RE: Ocean Waves:
1. Linear Wave Formula  What is the average sea state that is capable of producing a 20 ft. wave?...

Aug2509 12:45 PM
Governor

12 
1,342 
Say I want to put a bottle of water in the microwave and heat it up. How do I determine the pressure in the bottle as...

Aug2509 09:48 AM
Lok

7 
2,302 
The total energy of a pendulum is calculated either by it's maximum height (Gravitational Potential), or by the lowest...

Aug2409 02:52 PM
DaleSpam

21 
4,409 
I need a couple of formulas to determine the live and dead load on a stretched cable for a zip line. They are:
1....

Aug2409 12:40 PM
Marcpost

0 
4,295 
Do only electrons emit a photon when accelerated in EM field? Do protons, for example, radiate?

Aug2409 12:30 PM
Bob S

3 
1,623 
Hi,
I'm looking for a little bit of help in this matter, I'm trying to put up a general formula of the internal...

Aug2409 04:11 AM
TriKri

9 
4,867 