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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
ZapperZ
2 70,490
The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...
May6-14 04:32 AM
Cthugha
168 190,440
When the dipole makes an angle with an electric field, its potential energy is given as the work done in bringing the...
Jul18-14 10:58 PM
DeltaČ
7 1,528
can anyone proove the following "IN A LOADED STRUCTURE THE POTENTIAL ENERGY OF THE SYSTEM IS MINIMUM IN ITS...
Sep25-05 11:04 AM
Rade
2 1,169
What is the potential energy of a pendulum at any point?
Jun23-14 12:48 PM
SpY]
4 435
So I've always been confused about this. Suppose you have your normal pendulum: length L, mass m, and angle Θ. When...
Mar18-14 08:25 AM
DaleSpam
9 478
Something I realized the other day - trying to figure out what the gravitational (or electrostatic) force would be...
Oct29-06 08:14 AM
arildno
4 3,101
the potential energy of earth is infinity or zero?
Oct25-09 09:45 AM
russ_watters
3 1,388
I was writing a script to help me calculate gravitation and various other things when i noticed i don't know how to...
Nov2-13 07:52 PM
pixelpuffin
4 906
Frankly, I think gravity should be repulsive force on the basis of a simple energy argument which I will now make. I...
Jun27-10 08:11 AM
DaleSpam
5 1,153
Consider an atom having multiple protons and neutrons in its nucleus, which of the two nucleons will have higher...
Apr22-14 10:02 AM
UltrafastPED
2 314
Hi folks and happy new year, As usual i have been leafing through some old physics books and have stumbled across...
Dec29-03 03:24 AM
beckett
1 1,688
While i don't do physics i do study mathematics, and am very interested in the field of mechanics/pure/physics. I...
Jul12-04 06:41 AM
maverick280857
8 1,705
Here is my question. For example if i am standing on top of the empire state building and i define that to be...
Oct7-11 10:42 PM
Vorde
4 1,937
Okay this might be a stupid question but here goes. I know that if I place two bar magnets with their N sides...
Sep10-09 08:40 PM
RestlessMind
2 1,096
I simply can't wrap my head around a test question I received. I'll relate it as best as I can remember: "A...
Feb11-11 03:06 PM
Doc Al
5 2,096
Hi I have a simple question about thin-film peeling physics. A lot of papers say that the potential energy term in...
Jan17-11 04:39 AM
jangheej
0 1,003
I attached a graph of a potential energy vs. position graph. My question is, the relative minimum is characterized as...
Dec19-12 04:42 PM
haruspex
6 2,218
JO is "loaded" into a spring-loaded "cannon-ball" launcher as PICTURE. She lands into a springy trampoline that is...
Nov22-10 04:24 PM
tiny-tim
1 687
This is not an homework (it could seems). Let's suppose to have 2 vortexes locate in the cartesian plane (x,y): the...
Nov15-08 03:21 AM
Allamarein
0 2,058
In electronics it is customary to define the potential of ground (thinking of the earth as a large conductor) as zero....
May25-10 11:16 AM
Studiot
2 1,915
how does the potential increases on adding positive charges and decreases on adding negative charges. why does the...
Nov24-04 03:02 PM
rayjohn01
2 3,603
Just wondering if we have a non-conducting spherical shell which is uniformly charged and we know the potential at the...
Jun9-12 07:34 AM
algebrat
1 1,108
a flexible but inextensible chain having uniform mass density is suspended between two points (of course not...
Apr24-12 07:53 AM
haruspex
2 825
Here is a newbie, goofball question. How much potential nuclear or atomic energy is there in the human body? I know a...
Jan11-08 09:15 AM
yogi3939
2 5,685
I'm studying electromagnetism through a book of Purcell and I'm having trouble in some point... The book tells me...
Jun8-10 07:04 PM
Taturana
6 3,157
Hello physicians. Consider the following Brownian motion particle: \dot{x}(t)=\alpha(t)+\beta(t)\eta(t) The...
Jun11-13 09:42 PM
Steve Zissou
6 644
We are presenting you a very perplexing but interesting problem which you may have probably encountered in...
Aug28-11 02:58 PM
clem
2 1,163
What would it mean when you subtract potential energy of a higher elevation from the summation of energy(kinetic +...
Aug21-11 09:19 PM
Dr_Morbius
12 4,422
I would like to consult in private with with young talented physicists on a variety of topics. Including, but not...
Jul22-08 05:00 AM
copiousergs@gmail.com
0 578
Hi, I have a fresnel lens from a old big screen tv and it is roughly 1 meter square. The focal point comes down to...
Sep22-11 05:01 AM
sophiecentaur
9 13,158
I was reading electrostatic and found out that the electric field is just the negetive divergence of potential . My...
Oct8-12 06:59 AM
Shan K
7 913
When potentiometer is used to measure and compare emf of cells, how that balncing point is reached?..................
Jan16-12 07:22 AM
fbgiant
2 2,541
I want to find out the potential difference between two given points with maximum accuracy. Which one should i choose...
Oct21-11 10:15 AM
xts
10 3,072
If I add a potentiometer to my circuit will I be able to control the brightness of the LED with the meter?
Mar18-13 03:50 AM
davenn
6 745
ok i understand how the conversions work and everything... 1 kg = 2.2 pounds... i was just thinking about this for a...
Jun10-08 11:34 AM
D H
9 12,364
Does anyone know what the equivalency is? I tried to google but I get a bunch of star trek websites for some reason...
Dec24-10 09:36 AM
Pengwuino
6 6,261
it was really tough to me to understand the relationship between the Newtons and Pounds, not in mathematical term that...
Mar4-11 06:08 AM
alyafey22
4 2,172
I've been looking around and some places tell me pounds is a english unit of weight and other tell me it's a unit of...
Nov10-11 03:45 PM
D H
41 27,949
Hello, I am a cop and I have a problem that we are unable to find an answer for at the station. We want to put...
Aug1-12 02:37 AM
Lsos
12 2,056
Hi everyone! This is my first post in these forums, so I apologize if this topic is a little off course from the...
Sep14-08 02:45 AM
Unspeakable
0 2,658
A pound being a measure of weight (force)and a kg being a measure of mass - how would I convert lbs. to Kg? If F=ma,...
Feb27-04 02:13 AM
russ_watters
6 47,319

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