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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
45,886 
This is an interesting topic.
Energy in different Frames of reference.
Assume
There is a body moving with a...

Apr2409 02:14 PM
Dweirdo

8 
804 
Does the amplitude of a wave changes when the source is moving? I am mainly interested in waves in a medium (e.g....

Apr712 05:17 AM
sk9

8 
4,880 
Hey all,
I am using the Joukowski transform to calculate the electrostatic potential and streamlines around an...

Feb1512 02:31 AM
meldraft

8 
2,082 
I hope this is in the right sub forum, but my question is simple. What type of mindset is required to complete...

Feb1812 10:44 PM
Ken G

8 
1,715 
So here is the scenario (see attachment)  I have a semicircle wire (radius R=15.9cm) which is made of insulator...

Feb1912 04:06 AM
vanhees71

8 
1,147 
Since energy is changed to work done, and the distance will be constant, the only variable is the force. So 100N...

Feb1912 02:58 AM
Drakkith

8 
1,562 
Hi!
Why it is necessary to has angle in radians for SHM(Simple pendulum)?

Mar912 07:31 AM
shayaan_musta

8 
891 
Hello,
I was wondering if someone knew if it was physically possible to have a 2x1 optical wave guide combiner...

Mar1412 08:49 PM
narra

8 
1,427 
Well, the reason I'm asking this is because we recently did a problem in my class where we were supposed to show some...

Mar2012 01:43 PM
chrisbaird

8 
1,868 
It is known that if a charged particle accelerates then it emits electromagnetic wave (energy). If so then this means...

Mar2112 04:10 AM
vanhees71

8 
1,467 
When a bucket of water is at rest the water on the sides will rise for the following reason taken from my textbook:
...

Mar2112 08:31 PM
kurtlesker

8 
1,122 
Why isn't the influence of air pressure assimilated in Archimedes law?
If an obect is more dense than the fluid, it...

Mar3012 06:06 AM
HWGXX7

8 
1,900 
If two masses, m and 2m, are separated by a distance r, what is the potential energy of mass m? What is the potential...

Mar2712 07:15 PM
K^2

8 
1,282 
Hello experts!
Higher the emf of the battery implies that the higher the drift speed of the electrons or increase...

Mar3012 04:46 AM
shayaan_musta

8 
1,266 
If a permanent magnet is moved in a direction at right angles to the magnet field lines in the magnet, is an emf...

Mar3012 04:40 PM
MS La Moreaux

8 
1,016 
Is there a way to get energy density from watts, with the resultant energy density not involving time, as watts do?
...

Mar3112 03:05 AM
jaketodd

8 
1,417 
Hello,
I have this problem with deriving the formule from de definition of potential energy
Picture show a...

Apr1212 03:16 PM
HWGXX7

8 
1,343 
I have a pendulum swinging with frequency w in a frictionless environment and I apply a periodic harmonic driving...

Apr1012 05:36 PM
Ken G

8 
1,746 
Ok i know what you are thinking, not this again, but i would have thought the same thing until an idea came to me when...

Apr612 01:34 PM
berkeman

8 
1,952 
I'm having a little problem with my book as I was reading about fluid mechanics. The book seems to have skipped a bit...

Apr612 03:11 PM
tinytim

8 
1,256 
an average one,not big or poney...

Apr1712 12:26 PM
chrisbaird

8 
1,043 
The definition of temperature is:
1/T = ∂S/∂U
but mathematically this is a bit weird. Because S = klnW, where W...

Apr1512 11:31 AM
Ken G

8 
1,460 
In the Lorenz gauge, the Maxwell equations reduce to four inhomogenous wave equations, with the charge density acting...

Apr1412 01:05 PM
jjustinn

8 
1,479 
So lets say I have a wire of length l moving in a uniform magnetic field of constant velocity.
Now the induced EMF...

Apr1512 02:30 AM
tinytim

8 
2,880 
Suppose a closed loop with constant current around the loop. The loop is in a uniform constant B field. The force is ...

Apr1712 02:41 PM
yungman

8 
852 
I need a mathematical proof that should indicate the following: The direction of the electric field must be radial,...

Apr2212 10:33 PM
Hassan2

8 
1,055 
Hi,
I need to compute the inverse of the moment of inertia (MOI) tensor of a bunch of point particles in a simulation...

Apr1912 05:11 PM
danbolin

8 
1,782 
The essence of Gauss' law is that the total flux through a closed surface only depends on the charge inside the...

Apr2312 08:16 AM
tinytim

8 
1,274 
Hello. I need help with some thermo basics.
I can't understand the concept of constant volume...

Apr2912 11:44 PM
Andrew Mason

8 
1,431 
Good Morning
I am new user on Forum and I'm sorry for all mistake. I am living in Poland and My English is on the...

May112 12:46 PM
dexter90

8 
728 
If B~1/r2, then if we have a simple loop, B near the inner edge of the loop will be infinite (or close to it). Why...

May412 10:04 AM
Hassan2

8 
885 
How far will a 1300 nanometer wave travel in 100 nanoseconds?
I know its simple but I can't remember how to do it...

May712 01:34 PM
Evil Bunny

8 
977 
How is electromagnetism different from gravity in that accelerated objects radiate EM waves when accelerated in an...

Jul1214 05:39 PM
WannabeNewton

8 
941 
I know what is circulation by a mathematical point of view, but in the reality (in the physical world), what is...

Jun1214 10:54 PM
Jhenrique

8 
528 
How would be the 2nd Kirchhoff's law for this circuit here:
...

Jun914 08:25 AM
CWatters

8 
251 
All the derivations of the RayleighJeans 'Law' I've seen assume that the electromagnetic radiation is enclosed in a...

Jun814 05:51 PM
Jano L.

8 
265 
The concept of a problem is that if rockets continue to jettison fuel, at some point they will get a very small...

Jun814 08:13 PM
MSpeezy

8 
285 
Hey guys,
I understand why the theorem describes the relationship between the lengths of the sides of a right...

Jun1814 08:33 AM
RyanXXVI

8 
428 
Please, tell me really simply from the viewpoint of molecular physics... Why is liquid having a smaller density on...

Jun2214 03:09 PM
Oomph!

8 
316 
So a cube submerged in water will experience pressure on all six sides, and the pressure on the bottom will be greater...

Jul714 06:51 AM
DaleSpam

8 
628 