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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,699 
Consider a freely rotating body. Let the axis of rotation be the zaxis. For simplicity assume all the mass of the...

Sep212 02:57 PM
birulami

1 
1,362 
Says Wikipedia: "The moment of inertia is a measure of an object's resistance to any change in its state of rotation"....

Sep212 09:46 AM
Simon Bridge

3 
580 
Hello everyone.
I am fairly familiar with physics. However I have a question regarding the math behind a lever...

Aug3112 06:20 AM
cmmcnamara

4 
721 
Was not sure where to post this specifically, but I am looking to calculate the possible distance traveled by by a...

Aug3112 08:12 AM
mfb

6 
877 
Consider the Hamiltonian of Kepler problem
H(\boldsymbol{r},\boldsymbol{p})=
\frac{\boldsymbol{p}^2}{2\mu}...

Aug3012 03:32 PM
Clausius

0 
404 
Given the following instantaneous parameters and constants...
Known:
d = air density = 1.24
Cr = rolling...

Aug3012 11:07 PM
voko

6 
1,216 
Forums like these give me faith in humanity.
I am busy with little project and I've just come out of angular...

Sep212 07:19 AM
The Sparrow

6 
839 
I had a thermal conductance homework problem where heat flowed through gold, and then silver. Both materials were of...

Aug3012 04:31 PM
Emilyjoint

4 
611 
I'm a little confused about what exactly work/energy is. I understand that if I exert 10 N o a box over a distance of...

Sep112 12:31 PM
Naty1

3 
740 
This page
http://hyperphysics.phyastr.gsu.edu/hbase/electric/capeng2.html
talks about how the battery does...

Sep212 08:33 AM
DaleSpam

13 
1,188 
Hey I just wanted to check with y'all, but I feel I'm fairly well acquainted with momentum and the rules surrounding...

Aug2912 02:53 PM
A.T.

1 
913 
Here is a simple example about my issue with this. 1g ball (ball A) moving west at 10m/s hits another 1g ball (ball...

Aug3012 07:49 AM
mickybob

6 
2,977 
Hi everyone I have a quick question regarding heat transfer. I have yet to study heat transfer yet but I have a basic...

Aug2912 01:56 PM
pa5tabear

1 
559 
I have a question. All things being equal as far as flow and pressure goes...where would the gas preferentially flow...

Aug2912 04:08 PM
Integral

14 
822 
I have only recently found out about this idea (many thanks m.e.t.a.) and I am curious about it. Could it be used to...

Sep112 03:38 PM
Rooted

5 
1,640 
The cartesian sign convention for a convex lens is follows:
1. All distances on the principal axis are measured from...

Aug2912 02:24 AM
Simon Bridge

3 
517 
Dear friends,
In small oscillation problem of classical mechanics, the generalized force is zero (Eq. (61)) of the...

Sep312 03:55 AM
saravanan13

0 
582 
In the question I am not able to understand what the scenario is. Is it that we are removing the P force after...

Sep112 05:03 PM
haruspex

7 
992 
I have an image taken with a camera. I know the f/#, focal length, CCD characteristics, and an approximate distance to...

Aug3012 08:54 AM
Andy Resnick

10 
1,175 
Hi, Im getting started on analytical mechanics but need some help understanding some of the things that is said in my...

Aug3012 01:10 PM
voko

19 
1,086 
How exactly does water behave in a magnetic field? I've seen pictures of a boat that uses electromagnetic rail...

Aug2812 01:11 PM
soothsayer

5 
781 
The flux rule for motional emf can be stated as:
d\phi/dt = \epsilon
I have some questions regarding this. 1)...

Sep312 03:51 AM
harrylin

3 
789 
If I am trying to minimize triboelectric charging. What two substances when rubbed together would produce minimal...

Aug3012 05:37 PM
DrZoidberg

2 
893 
I'm just confused...
I know that magnetic fields can do work only on pure magnetic dipoles like a bar magnet. Based...

Aug3112 07:17 AM
harrylin

407 
30,702 
I need to calculate the torque needed to move an object in horizontal direction. The object is subjected to a force P...

Aug2912 07:34 AM
mfb

1 
801 
Hi
I had a few thermodynamics questions on a thread that was locked. The link is here and my questions are directed...

Aug2912 02:13 AM
Darwin123

20 
2,175 
I am not sure if this is wright section for this question,so please excuse me if a made a mistake.
I am thinking of...

Aug2912 02:27 AM
Bobbywhy

4 
618 
Consider a current loop with a switch and an AC source in space, there is a point charge(electron) inside this loop,...

Aug3012 02:14 PM
Qreeus

34 
3,145 
Hello Forum,
In kinematics we study motion and the trajectories of moving bodies.
The trajectory is a line...

Aug2812 01:56 PM
voko

4 
929 
I need a review of solenoid equations, such as equations for bar solenoids, toroidal solenoids, and toroidal solenoids...

Aug3012 11:09 AM
Prince Rilian

2 
888 
I'm interested in working out an efficient and precise numerical method to find the charge density on a conductor with...

Aug2812 11:33 AM
bcrowell

5 
903 
I am trying to better understand some concepts in magnetism and I hope that someone here can help clarify a few...

Aug2912 01:17 AM
SamBam77

3 
785 
Suppose a permanent barmagnet is placed inside a toroid/torus and the toroid is then completed and power applied. How...

Aug2812 11:09 PM
Simon Bridge

3 
1,219 
Here is a quote from one of the MIT notes on magnetism :
"Note that F(magnetic force) is perpendicular to v and B ,...

Aug2912 05:57 PM
gabbagabbahey

9 
966 
Is it possible for a surface that reflects all visible light, and absorbs absolutely none to exist, Or would that...

Sep312 05:02 AM
Simon Bridge

11 
831 
Hi all,
I've been looking at some buoyancy problems and one continues to vex me, how to calculate the new fluid...

Sep112 02:06 AM
haruspex

1 
933 
Say an object is dropped out of a plane at height h above the ground and flying at a constant speed v0...
Ignoring...

Aug2812 09:10 AM
mfb

2 
621 
Assume we have an ideal gas of N particles inside a thermally isolated cylinder of volume V, and that the cylinder is...

Aug3012 01:46 PM
Jolb

6 
1,703 
hi ...
These days i am trying to make sense of the various processes of thermodynamics and so far i have tried the...

Aug3012 09:03 AM
Studiot

3 
751 
Hey,
I am helping out with a class and the students were given a question about an electroscope that is being...

Aug2912 02:22 AM
Simon Bridge

3 
892 