The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...

Apr814 10:13 AM
ZapperZ

166 
160,170 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Apr2211 05:27 AM
ZapperZ

2 
63,612 
Suppose a bowler is standing on the edge of platform of a train speeding at 100 m/s, a bowl in his hand (m=1Kg) has...

T 11:11 AM
Nugatory

6 
160 
I know that charges experience a force when they are moving with respect to a magnetic feild , but in case of...

T 10:09 AM
mikeph

1 
26 
Hi my background is in mechanical engineering. I use a little bit of motion physics but not often.
Pls excuse any...

T 08:29 AM
MikeGomez

22 
449 
Hi,
Three questions to forum about something I have been wondering about on antimatter:
Can antihydrogen fuse to...

T 08:19 AM
dauto

3 
132 
Can an atom be considered as an example of a dipole? It has positive charge in the nucleus and negative charge around...

T 07:15 AM
Prashasti

6 
124 
I read that based on temperature , electrons have kinetic energy in metals so they randomly move around the ion...

T 07:09 AM
sophiecentaur

10 
246 
“A newly constructed device generates a beam of concentrated sound that, for the first time, exerts a continuous,...

T 07:05 AM
sophiecentaur

2 
125 
I understand that mass isn't weight. When I look up "what is mass?", I come across all kinds of videos explaining the...

T 06:28 AM
DrStupid

33 
1,162 
I don't believe they are because the field lines don't have a representation such as flux but I want to be sure. Also...

T 01:59 AM
UltrafastPED

1 
94 
Please , watch this girl ( at about 50 sec) https://www.youtube.com/watch?v=UZlW1a63KZs,
can someone tell me what...

T 01:29 AM
bobie

9 
249 
Suppose we have the Young's experiment with a convergent lens between the slits and the screen. How would the...

T 12:34 AM
UltrafastPED

1 
108 
Is it that ideal gases do not possess potential energy because there are no intermolecular forces. But, real gases do...

T 12:28 AM
seongwei

0 
88 
Heat is a product of excited energy states of the fundamental particles that make up atoms, correct?
So do the...

Y 09:46 PM
ModusPwnd

15 
375 
I am making a soil container of size 1meter x 1 meter x 0.60 meter or (3.2feet x 3.2 feet x 1.9 feet)
with soils in...

Y 09:05 PM
Infinite/Zero

6 
194 
In 1889 and 1909 Roberto Mantovani published a hypothesis of Earth expansion and continental drift. He assumed that a...

Y 06:05 PM
russ_watters

1 
155 
Hi, if I have a mass on a string and I swing it around my head at a constant speed, what is the resultant force on the...

Y 05:59 PM
TumblingDice

2 
142 
It is well known that a vector can't be divided by a vector, as a direction can't be divided by a direction. Keeping...

Y 03:02 PM
mathman

3 
146 
Hi, I did a forum search on the topic , but from all the threads I went through I still have doubts about my...

Y 02:54 PM
Salvador

2 
160 
Hi
Could anyone explain to me the concept and significance of mesh density as a function of steps per wavelength?...

Y 01:22 PM
boneh3ad

3 
124 
I don't have an intuitive understanding of this. To me it seems that
power should be related to just current, since...

Y 12:46 PM
BOYLANATOR

13 
415 
We know that there are force carrying particles for the strong and weak nuclear force, and the electromagnetism force....

Y 10:43 AM
dauto

4 
238 

 
 
 
What is the work done on a paramagnetic? I have seen both of the following:
\hat{d}w = MdB
\hat{d}w = BdM
...

Y 06:52 AM
DrDu

3 
214 
How should I place three objects for e.g three pencils so that no shadow is formed for them throughout the day(light...

Y 06:46 AM
Vanadium 50

11 
229 
Force can be expressed as F = P/v where P = power (watts) and v = velocity (metres per second)
So what happens when...

Y 05:14 AM
my2cts

25 
529 
Hi all, i'm trying to calculate solenoid force using this tool:
...

Y 04:38 AM
Bern123

0 
179 
Not sure if this is the right forum at all but maybe you guys might have something.
Basically, I need to stick and...

Apr1814 06:30 PM
TumblingDice

11 
327 
is it related to fermi energy? what is the exact equation form?

Apr1814 04:58 PM
nasu

7 
262 
Can I find out the natural extension of a spring if I am only given the mass of a block that can be put on it and the...

Apr1814 04:15 PM
Emz19

6 
160 
Hello there,
This is my first post on here, so I hope that I've posted in the appropriate subforum. My question...

Apr1814 02:02 PM
FreakJoe

3 
170 
Hello All,
My background in physics is very basics. So I apologize in advanced if a make silly logical or empirical...

Apr1814 01:00 PM
Grendizer

35 
695 
I see in the main page an article touting a record setting 20,000 amps flowing in a superconductor.
Normally, with...

Apr1814 12:05 PM
UltrafastPED

24 
483 
I'm hoping for some help in understanding how the MichelsonGalePearson experiment in 1925 is held as a refutation of...

Apr1814 12:02 PM
one_raven

3 
169 
So I understand the Superposition principle doesn't apply to nonlinear systems. I want students to understand (in...

Apr1814 08:08 AM
Q_Goest

3 
244 
It boils down to this:
Imagine you had a mattress for you and your significant other, who is lighter than you. You...

Apr1814 02:25 AM
A.T.

18 
645 

 
 
 
From my textbook:
"An electric charge that is uniformly distributed on the surface of a sphere, affects a different...

Apr1714 03:05 PM
dauto

2 
221 
We all can measure the mass of a body by any common instrument like Spring Balance.
But if we go from one place to...

Apr1714 12:38 PM
sophiecentaur

15 
289 
How do I determine the force per square inch that a baseball would hit a wall?
Assume the baseball was thrown at 50...

Apr1714 12:31 PM
sophiecentaur

4 
242 
I was taught that in conditions where there is less friction, such as on icy or wet roads, the braking distance of a...

Apr1714 06:46 AM
UltrafastPED

4 
210 