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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
46,968 
I have seen a reversible process defined as one in which the system and surroundings are restored to their initial...

Mar3011 08:06 AM
Andrew Mason

9 
1,671 
In several text books I've read that treat classical thermodynamics, there is a theorem due to Carnot that is commonly...

Sep510 10:13 AM
jojo12345

0 
881 
In another thread, DH and I have been discussing the definition of an ideal gas. DH, who appears to be a physicist,...

Sep1513 07:30 PM
Chestermiller

6 
778 
Does anyone know how to derive the following:
\nabla x \vec{V} = k...

Jul809 02:39 PM
jeff1evesque

0 
578 
This is a very sound stupid question, but I'll go ahead anyway.
Current is defined as the displacement of charge...

Apr2013 03:34 AM
Nikitin

4 
629 
I am a bit confused about the definition of elastic collision.
What i have studied is, elastic collision is one in...

Jan811 05:51 AM
kalesony

19 
6,857 
I'm confused by the definition of electric current. It is commonly defined as the time rate of change of charge...

Apr1410 01:23 AM
annumarch

4 
2,190 
Hi,
I'm having some difficulty understanding the definition of an electric field.
When we define the electric...

Feb2908 12:40 AM
cepheid

9 
2,497 
I recently realized that I have never really seen a rigorous definition of the electric polarization field in matter...

Oct1707 10:46 AM
Meir Achuz

2 
14,241 
Hello, I just read on "Integrated electronics" by Millman the following definition:
"The potential V (volts) of...

Jul410 09:23 AM
Taturana

4 
3,163 
Everyone knows that the potential difference between two points 1 and 2 is given by \int_{1}^{2}{\vec{E}}\cdot...

Dec1610 11:44 PM
dgOnPhys

7 
4,150 
What is the definition of entropy of a thermodynamic irreversible process?
In the case of reversible process from...

Oct213 09:26 AM
Chestermiller

5 
1,072 
F=\frac{q1q2}{4\pi\epsilon_{0}}
If epsilon 0 was defined as the proportionality constant for this equation, why was...

Jun2910 02:56 AM
AJ Bentley

3 
7,097 
The total work is the same in all adiabatic processes between any two equilibrium states having the same kinetic and...

Nov1912 02:15 AM
DrDu

22 
1,907 
We have been working with Gibbs factors and the grand partition function in my thermodyamics class. There is an...

Mar1006 02:30 AM
eep

0 
2,335 
Okay, I'm confused and need someone smarter than me to explain something to me about Kinetic Energy.
In studying...

May610 07:17 PM
DaleSpam

9 
2,496 
I'm learning classical mechanics right now, and I have a question about the "initial definition" of the Lagrange...

Mar1204 12:54 PM
turin

10 
17,742 
When one finds the torque on a rectangular current loop one finds that it's equal to
\vec m \times \vec B
where...

Oct611 08:32 AM
center o bass

4 
1,285 
What is the physical meaning of each term in the parallelaxis theorem?
I=I com +Mh^2

Nov1211 09:49 PM
Duane

3 
2,295 
Why is change in potential energy is defined as
PE1  PE0 = W
I mean I could see it for example for gravity if...

Nov3012 09:11 PM
jtbell

4 
1,071 
I understand the definition of resonance as the ability of sound to cause another medium to vibrate thereby amplifying...

Jan2904 04:06 PM
rddimtbo

0 
1,023 
I have come up with the following definition of static electricity , which I hope is acceptable to all , if not I...

Jan1104 07:06 PM
chroot

12 
6,337 
The Lagrangian finite strain tensor is defined as:
E_{i,j}=\frac{1}{2}\left(\frac{\partial x_k}{\partial...

Sep310 04:01 AM
albus

0 
4,188 
I understand that the definition of the number of dimensions of a vector space, but somehow that doesn't really help...

Sep2005 03:44 PM
pervect

9 
2,598 
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 
5,296 
Hello
In Zemansky's book there is this definition of thermal equilibrium:
"Thermal equilibrium exists when there...

Nov310 04:55 AM
Arham

8 
5,145 
I understand the definition to be the amount of work done in moving a charge from one point to another divided by the...

Jul1812 04:38 PM
krackers

17 
2,985 
In physics, we use the concept of mass, and we use a unit of mass.
It would appear that we must first define the...

Jul2710 09:58 AM
Creator

1 
812 
i want to understand physics as follows
1)Physics is the study of nature
2)mechanics is the study of response of...

Aug306 11:17 PM
chandran

0 
2,192 
In classical mechanics, if we consider the motion of a particle of mass m, then
...

Nov2011 09:40 PM
motion_ar

15 
2,253 
Hi
Sorry if this is the wrong place to post this as it is probably more of an engineering question.
I'm trying...

Mar309 10:04 AM
Dr.D

7 
1,636 
Hello!
I want to know the deflection at certain points in a solid body with different cross sectional areas. A...

Jan1609 06:45 PM
skeleton

3 
3,557 
So I am trying to figure out how I can calculate the deflection and ultimate bending moment capacity of a hollow tube...

Jul212 06:41 AM
rkmore

2 
843 
Hi:
In mechanics of materials. I learned that the deflection of a beam can be characterized by its elastic curve...

Jul1013 06:18 PM
hihiip201

6 
818 
If two cantilever beams are fixed at Left Hand Side (LHS) and joined to eachother by means of a prop at RHS, how do i...

Mar1105 06:08 AM
phiska

0 
10,627 
How to calculate the deflection in ring, fixed at center, with a radial point force acting at some point(let say at...

Aug1811 08:51 PM
vishal007win

4 
2,776 
I'm having trouble understanding what a deformable system is? Please give me a detailed example with your...

Dec910 06:14 PM
Spinnor

1 
2,467 
This is a bit technical and I'm not exactly sure how to formulate my problem, but I'll try my best. I've been reading...

Dec1509 12:35 PM
Päällikkö

0 
787 
I want to calculate the deformation of a plate of a material upon being struck by a mass moving along the plate's...

Oct411 09:25 PM
ITAmember

0 
1,095 
I've been working on a ballistics model for quite some time now, and I am getting close to finishing some parts of it,...

May709 04:12 AM
tuoni

0 
570 