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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
47,904 
This will probably end up being a stupid question with a simple answer, but if you don't ask and just accept things...

T 06:17 PM
Andy Resnick

6 
143 
What does p = mv really mean? For example, why is there a physical law based upon the product of mass and velocity?...

T 05:59 PM
DaleSpam

69 
1,862 

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

T 11:57 AM
Chestermiller

143 
10,120 
Hey everyone, I'm currently working on a project to construct the Bessel function of a vibrating surface of water in a...

T 10:18 AM
Andy Resnick

1 
167 
Is it possible to generate energy from the earth's rotation? Imagine a Foucault Pendulum attached to a dynamo shaft?
...

T 07:13 AM
Nugatory

7 
204 
So, I'm attempting to programm orbit in Unity game engine. So I need equation that shows r and phi depending on time. ...

Y 03:15 PM
GhostLoveScore

9 
183 
A free rigid body (no forces/torques acting on it) has a constant angular momentum. And yet, I am puzzled because...

Y 02:42 PM
samalkhaiat

9 
387 
One particular experiment that I remember from a visit to a Science Center is the one involving a revolving platform...

Y 02:02 PM
A.T.

43 
731 
I want to derive some equations for a 2D airplane's motion, specifically when it lifts off and lands. Can someone...

Y 01:59 PM
bigfooted

2 
133 
Hello everyone,
Assume that you have a flat plate, that is moving up and down in a sinusoidal motion with the...

Y 01:30 PM
MechMaster

0 
97 
If we had a van de graaff generator, near the sphere there is a metal plate ( not touching) and it's wired to the...

Y 11:10 AM
abdo799

7 
148 
Hello,
I have a conducting copper ring of inner radius a and outer radius b.
point charges Q pass through the centre...

Y 10:19 AM
Greg Bernhardt

1 
149 
My textbook says that the value of the coefficient of friction lies between 0.1 and 1.5. But I see no reason why it...

Y 09:51 AM
Murtuza Tipu

7 
220 
I am trying to make a fiber laser's dispersive beam into a collimated beam by using a convex lens (BBAR, f = 30 mm),...

Y 07:30 AM
nordmoon

0 
96 
A wooden box on a weighing scale weighs 1 kg. Inside the box is a gyroscope which is set spinning, and the box is now...

Y 06:35 AM
aeroseek

5 
169 
A disk of mass M and radius R is held up by a massless string. (The two ends of the string are connected to a ceiling...

Y 12:38 AM
Simon Bridge

3 
138 
I was wondering if we can somehow use the formula Potential Energy = 1/2K(x(x=Amplitude))^2 for a pendulum if we are...

Aug3114 06:53 PM
hongiddong

4 
117 
I have been noticing a few examples of systems that can extract energy or do useful work from seemingly random...

Aug3114 11:20 AM
parsec

0 
114 
Two electrons, they have their electric fields and magnetic dipole moments. Their electric field is proportional to...

Aug3114 08:02 AM
Simon Bridge

14 
281 
I have learnt in 1st year that the underdamped simple harmonic motion can be described by the differential equation ...

Aug3114 07:55 AM
Philip Wood

3 
148 
There is a conducting circular loop with resistance R falling in the magnetic field ...

Aug3114 04:56 AM
Shyan

0 
123 
http://en.wikipedia.org/wiki/Brewster%27s_angle
The dipoles that produce the transmitted (refracted) light...

Aug3114 03:55 AM
ehild

7 
207 
From what I know, the pressure of a gas is due to the collisions of its molecules against a surface. So I don't...

Aug3014 12:05 PM
Simon Bridge

6 
178 
My friend and I had this question and after physicsfighting each other we came to a conclusion that the feather...

Aug3014 08:08 AM
mal4mac

7 
234 
I am learning about transformers and from everything I've read I can see how its possible to create a 180 degree phase...

Aug3014 07:11 AM
gsal

2 
124 
One way to solve the simple LC circuit with 1 inductor and 1 capacitor is to use the Lagrangian formulation of...

Aug3014 07:04 AM
gsal

3 
193 
Hey guys can someone please give me a good explanation on why in an RC circuit the resistor voltage is leading the...

Aug3014 06:51 AM
gsal

5 
140 
Wikipedia claims that the Chandler wobble (a deviation of the angular velocity vector of the Earth with respect to the...

Aug3014 04:32 AM
vanhees71

2 
205 
Dear Experts,
When we launch a satellite, we launch it from earth which is spinning, so the tangential velocity...

Aug3014 03:35 AM
rcgldr

10 
201 
Could anyone please explain or advice me where to read about principles of Schlieren image formation NOT in terms of...

Aug2914 09:19 PM
Steve Drake

1 
137 
Hello Forum,
The numerical aperture NA of a lens is usually a parameter (adimensional) that indicates the lens...

Aug2914 06:20 PM
davenn

1 
114 
So I'm looking at the hessian of the Newtonian potential:
\partial^2\phi / \partial x_i \partial x_j
Using the...

Aug2914 05:15 PM
Chain

2 
129 
I guess we all know laser beams. I wonder if we can make beams in the microwave frequency range and how the beam width...

Aug2914 05:05 AM
davenn

3 
150 
Let's say there is two tubes(cylinders with no tops or bottoms) with charges ##q_1## and ##q_2##, radii ##b_1## and...

Aug2914 04:52 AM
Transstars

3 
191 
Ok small bit of a problem which I have been experiencing.
I am using an industrial size plasma oven by advance...

Aug2814 10:04 PM
Greg Bernhardt

1 
250 
Is a standing wave actually a traveling wave appearing to be still do to interference of two different waves?
If...

Aug2814 03:23 PM
enorbet

15 
357 
I attached a picture with 3 questions?
My first question is, I know that for a convex or concave mirror, If I...

Aug2814 03:03 PM
Drakkith

9 
212 
I need to work out the liters per hour from the diagram I have attached. There are no motors/pumps involved just...

Aug2814 10:59 AM
Nugatory

7 
154 
How can life be compatible with the second law of thermodynamics?
Here is how. Life is a selforganized system. A...

Aug2814 10:57 AM
Shyan

1 
149 