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Jan16-12 Greg Bernhardt
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
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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Apr22-11 05:27 AM
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Combining first and second law of thermodynamics we can get the following equation TdS=dU-PextdV First question:...
Jul10-14 01:07 PM
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Is there a reason geometrized units convert everything to length? Why not time or something else? This seems odd...
Jul10-14 08:38 AM
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I have attached a problem. ∫dl = A1B1 = 1 Here dl is a length of wire but in problem it takes distance between...
Jul9-14 11:52 PM
DeltaČ
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Hey guys i had a question in my paper why electrostatic field lines cannot be discontinuous in charge free region...
Jul9-14 10:11 PM
Simon Bridge
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Good morning I need to ask about the exact formula for the phase shift used in stimulated Brillouin scattering...
Jul9-14 07:16 PM
eahaidar
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I was wondering if I could create plasma inside my own apparatus using a laser pointer and nitrogen..
Jul9-14 06:28 PM
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The Volume of an atom comes from its electrons and mass of an atom comes from its nucleons. I don't understand why? ...
Jul9-14 05:28 PM
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Hi, please could someone help with my confusion over these two qauntities. In class we recently learnt that magnetic...
Jul9-14 05:14 PM
Jimmy87
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i had a question in my paper why electrostatic field lines cannot be discontinuous in charge free region i...
Jul9-14 02:33 PM
Meir Achuz
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Hi all. This is not a homework question, I'm 33 and far away from homework. It is just a personal doubt. I've read a...
Jul9-14 12:40 PM
rcgldr
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I may have some confusion with the terms "pressure" and "gravity" here. If hypothetically we could sink towards the...
Jul9-14 10:38 AM
Nugatory
15 1,277
Hi all, been a while since I've posted here, but figured this would be a great place to ask this question. I've...
Jul9-14 02:52 AM
spacediver
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Hello. Do you know that if you take grape to the microwave, you can make some plasma? I think so....
Jul8-14 04:25 PM
UltrafastPED
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I have seen a discussion of what would happen for an ideal gas expands irreversibly and adiabatically until absolute...
Jul8-14 03:50 PM
elegysix
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After calculating the gravitational PE using : PE = ( G * m1 * m2 ) / d Then i split the result into KE between...
Jul8-14 01:22 PM
mfb
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suppose you had a ball rolling down a ramp, without slipping and compare it to a ball that starts with a velocity u...
Jul8-14 08:21 AM
olivermsun
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Hello. I saw this experiment: https://www.youtube.com/watch?v=L-i-WLf6kPg You need only matches and match box. I...
Jul8-14 07:21 AM
A.T.
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Hello, Does anyone know the value of the coefficients of friction between the following surfaces? (I've searched all...
Jul8-14 03:35 AM
CWatters
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What is the nature of the force of gravitation? Is it electrostatic,magnetic or something else? According to the law...
Jul8-14 02:29 AM
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why simple harmonic motion is projected as or compared with uniform circular motion ?
Jul8-14 01:58 AM
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If I put a pice of metal close enough to a magnet it moves towards the magnet and they stick together, I can...
Jul8-14 12:17 AM
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Consider an adiabatic expansion of an ideal gas that work is done against friction or a piston. Since no heat exchange...
Jul7-14 09:41 PM
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i want an explanation on how electron clouds interact or behave during the formation of an ionic bond. we know that...
Jul7-14 09:37 PM
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Hello all: Can someone please convert .4350 (math is not one of my stronger areas) into cubic centimeters for me?...
Jul7-14 08:29 PM
russ_watters
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I am no english native speaker, sorry if something is a little confuse. I was swimming, and then I realized that...
Jul7-14 03:13 PM
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So i am a diabetic and i often need to find the amount of carbs in something, but because foods come in inconsistent...
Jul7-14 03:00 PM
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Is there a quick way to figure out the total potential energy between more than 2 charges without having to find the...
Jul7-14 11:52 AM
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I need help finding the temperature rise of a liquid (specifically diesel) due to a pressure increase. The system...
Jul7-14 09:43 AM
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Why cold gas is used for producing an absorption line spectrum
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sophiecentaur
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**sorry, the title should probably read determining a point at higher potential and potential energy So I feel...
Jul7-14 04:47 AM
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I have a question about the greenhouse effect that I hope you all can answer. My neighborhood went bonkers last...
Jul7-14 12:13 AM
Drakkith
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Hello Everybody, i would like to ask if anyone around here has any prior knowledge regarding magnetic...
Jul6-14 10:17 PM
Simon Bridge
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The field equations of general relativity are non-linear. There are exact analytic solutions to the equations for...
Jul6-14 10:16 PM
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Why do atoms repel each other when their electrons aren't in any defined region of space? If we think of the electron...
Jul6-14 07:34 PM
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Thank you in advance for your help! Consider a lifter performing a bench press. The weight of the bar is 225 lbs....
Jul6-14 07:04 PM
Nathanael
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Hi guys! I was wondering if someone could me help to get a free electronic copy of R. Wangsness book "Electromagnetic...
Jul6-14 05:45 PM
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Hi everyone. I have been reading on capacitors and dielectrics , before that i was reading up on piezoelectric...
Jul6-14 02:53 PM
UltrafastPED
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I want to know the meaning of energy dissipation...is eergy dissipation and energy consumption are same things??...
Jul6-14 08:19 AM
NascentOxygen
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First of all..I want to be clear about steady state..what actually it means..?? Does it mean state of constant current...
Jul6-14 08:11 AM
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I am a physics teacher looking for good books to read over the summer months...any books related to physics that I...
Jul5-14 10:56 PM
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