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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
41,678 
Quick question.... Can the gravitational constant only be used for earth or can it be used in questions regarding...

Apr1114 01:03 PM
SteamKing

3 
157 
Could anyone help my with proving that the acceleration of an object that is moving with uniform circular motion is...

Apr1114 09:55 AM
Emz19

4 
146 
If thermodynamic temperature can be interpreted as the average kinetic energy in a system, is there a quantity defined...

Apr1114 08:14 AM
njmcmu

5 
133 
How do I tell if a torque on a system is internal or external before conserving angular momentum? I know that if a...

Apr1114 12:23 AM
transparent

0 
137 
For my senior physics research project I've developed an orbital analysis program that calculates the minimum \Delta...

Apr1014 04:52 PM
Bobbo Snap

2 
124 
So as I am junior high school student just learned that when the terminals of wire are connected to a battery,an E...

Apr1014 11:30 AM
cabraham

3 
188 
Hi.
In this page the WoodsSaxon function is mentioned as describing the charge distribution for in the atomic...

Apr1014 10:55 AM
carllacan

0 
106 
I'm working on a project for myself in regards to atmospheric reentry. I've come across some equations that describe...

Apr914 08:41 PM
Rd123

11 
740 
I have never dealt with moment of inertia before, this is a physics lab i need to do some pre planning for which...

Apr914 02:17 PM
cooev769

8 
210 
I am currently working on a robotic manipulation problem and need to form a model for how an object responds. I start...

Apr914 09:14 AM
Liferider

1 
154 
Suppose that we have a body that is moving at a straight line, inertially wrt to another frame. If it starts to move...

Apr914 07:58 AM
Andrew Mason

9 
182 
Where does ohmic resistance arise from, is it from the collision of the current with the electrons of the wire or is...

Apr914 07:57 AM
nasu

19 
363 
Hi everyonefirst post, thanks for any guidance if I've posted in the wrong place.
I've got a simple idea and I'm...

Apr914 05:08 AM
Bobbywhy

7 
205 
This is not schoolwork.
Imagine that light did not have a constant speed, but behaved in the manner expected from...

Apr814 11:37 PM
Simon Bridge

1 
156 
Hi everyone.
I've been having this discussion with a pal regarding what affects the grip of a motorcycle's tires...

Apr814 11:17 PM
tduell

11 
1,546 
Hello there,
If a mass, m, is placed at one end of an boat of mass M, which is located on a frictionless ocean. If...

Apr814 12:58 PM
Matterwave

1 
157 
Hi there,
first, thank you for letting me posting here and hopefully helping me with this.
I am trying to model...

Apr814 10:29 AM
nrq

0 
148 
According to this website, there is an equation obtained empirically to obtain the amount of time it takes to cook a...

Apr814 08:30 AM
gmax137

3 
175 
I played around in another thread with mathematically determining where a car should be time wise on 1/4 mile run. I...

Apr814 04:28 AM
jumpjack

6 
262 
in a cyclotron the radius of the path of electron increases.but how if the velocity of the electron is accelerated its...

Apr814 03:59 AM
smart_worker

5 
334 
hey guys, can someone explain me Poiseuillie's law, because, I'm reading and reading and reading and don't understand...

Apr814 01:38 AM
SarcasticBunny

4 
170 
I have pictured I model about how electrons move in a circuit,
What happens first is that electrons are built up on...

Apr814 12:03 AM
jlopezfis

3 
207 
Hello everyone,
I want to have a simple example of an inductance calculation.
The magnetic field normal to a...

Apr814 12:00 AM
jlopezfis

2 
135 
So, I have been studying angular velocity and linear velocityand I want to use this information determine if a ray...

Apr714 11:08 PM
Simon Bridge

7 
207 
This relates to the extension of a uniform crosssection, homogenous, ideal wire which extends within the proportional...

Apr714 10:01 PM
kirakun

6 
191 
I am currently working on an experiment with piezoelectricity and was wondering how I would measure the force applied...

Apr714 05:38 PM
themadquark

3 
168 
Hi,
I was wondering what the frequency of a photon is according to maxwell's equations. Does the...

Apr714 05:04 PM
Drakkith

24 
742 
Dear Engineers,
My name is Humza Afaf and I have recently started a new business in Pakistan. Due to energy crisis...

Apr714 02:39 PM
humza_afaf

0 
122 
Hi! I have been studying AC generators. I am confused about why there is no current when the armature is...

Apr714 02:07 PM
jtbell

4 
165 
I have a quick question regarding causality in SR and some specific examples. Collision between two bodies is one of...

Apr714 11:03 AM
DaleSpam

10 
439 
Hello :smile: !
Let \mathbf{E}_1, \mathbf{H}_1 be an electromagnetic field due to certain sources \mathbf{J},...

Apr714 08:21 AM
EmilyRuck

0 
105 
According to Faraday's Law a changing magnetic field induces an electric field, an example of this is if you have a...

Apr714 08:18 AM
nasu

3 
153 
Sorry, but this will be a long post.
This isn't homework, I'm reviewing physics after many years of neglect.
...

Apr714 06:00 AM
jbriggs444

8 
325 
Imagine I am standing but not moving forward/backward, but I am rotating my body about my own axis. Now imagine if I...

Apr714 12:20 AM
UltrafastPED

1 
140 
I am not well versed in complex physics (I've taken honors physics in High school) so any help I can get with simpler...

Apr614 11:08 PM
WannabeNewton

6 
234 
How come a spring with applied weight of 1000 g goes down 9.8 cm but the same spring with applied weight of 500g goes...

Apr614 08:16 PM
jtbell

2 
152 
Hi
so I am trying to find the analytic solution for the steady state temperature distribution of a 2D plate which...

Apr614 05:24 PM
jancorn

0 
98 
Consider a solenoid of length l, no. of turns N, n = N/l, area A, and negligible resistance. In its middle is placed...

Apr614 04:17 PM
rude man

8 
217 
http://www.physicsforums.com/attachment.php?attachmentid=67782&stc=1&d=1395173030
Consider the following setup (see...

Apr614 01:26 PM
DaleSpam

54 
1,324 
Greetings,
I fell upon a certain question and it seemed that no matter what I did I was unable to solve it. I wished...

Apr614 10:08 AM
nasu

11 
269 