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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
48,195 
Given a nylon guitar(e.g.) string stretched across 2 boundary nodes, a makeshift "nut" and "bridge" on a workbench. At...

Nov308 04:34 AM
matthewgill

1 
1,188 
Is it correct to say that a field (i.e. electric) travels at the speed of light?
We've been taught that only...

Mar2007 10:54 PM
BeauGeste

2 
1,270 
So from what I understand, right handed circularly polarized light has angular momentum +1,
left handed circularly...

Jun407 08:26 PM
Claude Bile

22 
3,286 
Hi, I'm having trouble with an assignment problem. If you happen to have Hibbeler's Tenth Edition of "Dynamics" it is...

Apr705 01:23 AM
Andrew Mason

1 
1,366 
I've just finished my first term in an undergrad electromagnetism course using Wangsness as a textbook and we ended on...

Dec1613 03:15 PM
tinytim

3 
408 
Noob, apologies to all.
What is magnetic force? I can calculate it, and know that it is perpendicular to the motion...

Jul1212 10:35 AM
Morgoth

8 
1,341 
I have a servo motor that is able to provide a torque of T Nm. A rod of mass m kg and length l m is attached to the...

Aug410 04:01 AM
becheras

0 
594 
This is interesting...
How will the length and the mass of a golf club affect how far the ball will travel? What...

Jan611 07:46 PM
morrobay

4 
1,872 
Im trying to calculate the refelction angle of 2 points in a 2d plane, but not the same distance away from the...

Jan713 09:03 AM
becka221

2 
991 
I'm having trouble understanding the reflectivity and transmissivity (the ratios of energy reflected and transmitted...

Apr2310 02:02 PM
becko

5 
1,896 
I'm trying to understand Newton's rings. So we have a planoconvex lens supported in a plane (please, see image here...

Apr2910 11:01 PM
becko

10 
3,279 
I want to read Sommerfed Lectures on Theoretical Physics. I started with vol.1 Mechanics.
Just wondering if anyone...

Sep1110 08:00 AM
Jano L.

4 
3,129 
Hello. Can anyone tell me what is the "axis of figure" or "figure axis" ?
This is in the context of rigid bodies,...

Sep710 01:05 AM
becko

3 
1,180 
In the definition of the heavy symmetrical top, must one assume that the fixed point lies on the fixed point?
Thanks

Sep710 01:44 AM
becko

0 
1,741 
I need the general expression for the lagrangian density of a linear elastic solid. I haven't been able to find this...

Jan1311 05:42 PM
jambaugh

1 
1,176 
I am building a jet boat as a project this year. I am going construct the impeller my self but don't know what...

Apr1713 03:25 AM
CWatters

4 
788 
Hi
I'm trying to get a better understanding of dispersion in light. Specifically, the relationship between...

Jan1211 07:47 PM
Beermonster

9 
2,789 
Hi,
I want to graph the mechanical force and the electrical force generated by moving a ferromagnetic object into a...

Dec1806 06:09 PM
BeerFizz

4 
1,607 
In the context of Newtonian mechanics, why are gyroscopes good navigational instruments? What is the best shape for a...

May3105 05:16 PM
skeptic

2 
1,715 
Hi
What is the fundamental reason why a fluid with laminar flow going through a constriction in a pipe has lower...

Nov1608 06:20 PM
rcgldr

5 
1,612 
There is given two neutral parallel plates, distance between them is d. Between them is putted insulating plate with a...

Feb2012 08:10 AM
Hassan2

1 
991 
HI all
I am glad to join your community.
Just thinking on this and I do not encounter a solution:
We have...

May810 07:15 AM
jtbell

3 
885 
Sometimes during lunch time, strange talks appear :). And then great doubts about life and physics...
Imagine two...

May1308 07:09 PM
Shackleford

20 
3,194 
hi,everyone,could u please tell me the exact definition of energy?

Jan3007 03:53 PM
ZapperZ

19 
4,037 
Hi i'm studying for a test, and in the suggested reading book review has a few equations that they talk about but i'm...

Apr2105 01:13 PM
Meir Achuz

3 
1,540 
A colleague of mine has suggested using Liouville's Equation in order to calculate the probability of collision...

May1809 09:46 AM
belliott4488

3 
1,211 
Hello,
I am trying to determine the calculation to use to determine the force at which a disk plate will fail for...

Dec2511 01:49 AM
nvn

2 
1,679 
Hey Guys! I need help with interpreting something regarding simple barometers. I believe I understand what is going on...

Apr812 02:13 AM
nicu

1 
1,191 
It is possible that a fixed point to be attracting but not Liapunov stable.
I can't find any example of that.

Aug1414 08:56 PM
beman

0 
141 
I completed the book 'Nonlinear Dynamics and Chaos' by Strogatz. What will be next good book to learn about nonlinear...

Aug1614 08:01 PM
td21

1 
162 
Would someone please be able to run me through the different components of the Maxwell Stress Tensor equation.
...

Sep2808 05:30 PM
Ben473

9 
2,234 
In rotational motion ,
the units for torque, \tau = r \times F ,
are N \cdot m
and for work done by a...

Apr2608 04:05 AM
benabean

5 
2,494 
Hi, I'm a first year physics undergraduate and doing a structure of matter course.
I'm having difficult ...

May1208 06:30 AM
benabean

0 
1,447 
I'm trying to build a strobe light with an adjustable frequency. I have 1.5V, 9V batteries,1 micro farad, 10 micro...

Mar1511 08:16 PM
Curl

1 
1,526 
I was trying to derive the formula for the moment of inertia of a rectangular prism at its centre of mass. And ended...

Jan2210 10:38 PM
benhou

15 
7,242 
I am doing some basic heat calculations about a CW laser illuminated tungsten tip (which should be used for...

Apr2808 03:38 AM
Benindelft

2 
1,550 
how does the speed of sound vary with temperature in an ideal gas? how do we derive this relation?

Sep1405 09:29 AM
benitta

4 
1,030 
Hi there. I got two questions for you:
1 How can I calculate the force of attraction in Newton of two bar magnets...

Jun1008 07:56 AM
noneya44

2 
7,796 
I recently ran across an experiment which I needed to explain because it appeared to violate energy conservation. ...

May2508 03:17 PM
benjum

0 
3,195 
Such a device would be a major breakthrough for both research and practical usage. This is not my area of expertise;...

Aug1511 10:25 PM
uncanny_man

5 
1,257 