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If you are seeking help with a...

Apr2211 05:27 AM
ZapperZ

2 
70,374 
The aim of this thread is to highlight recent (as in within the past 3 months) noteworthy physics papers that have...

May614 04:32 AM
Cthugha

168 
190,061 
Hello, my name is Stefan and I am a twelfth grade high school student working on an extracurricular project which I...

Feb2312 06:29 PM
Drakkith

9 
2,220 
I've been having trouble visualizing 4D objects(4 physical dimensions, excluding time), in fact I cant seem to be able...

Feb2212 09:23 PM
James_Harford

12 
2,827 
what do we mean exactly by visible light?
Since light is oscillating electric and magnetic fields, and both electric...

Feb2312 03:36 AM
Johninch

20 
3,508 
This is why I think this is the case, I can't come up with any other reason and have been researching all over the...

Feb2112 06:35 PM
glenn21

21 
2,181 
As we know that conductivity of semicondutors can be increased or decreased by supplying heat or photons to the...

Feb2212 07:58 AM
lazyaditya

5 
1,192 
Hi,
I want to compute the wave filed from a point source, which is called Green's function or point spread...

Feb2112 08:37 PM
huangchao

0 
1,303 
what does torque of 5 kg.cm meant by for a dc geared motor? can I give a load upto 5 kg for that motor? If so what are...

Feb2212 12:18 AM
dexterdev

2 
3,559 
According to my physics textbook, one can find out the direction of a magnetic field by a small magnet. The magnet...

Feb2112 09:48 PM
DrZoidberg

6 
5,766 
Am I right in thinking the chip controlling the LED is applying more or less power to make electrons go to different...

Feb2312 04:35 PM
Bobbywhy

4 
1,190 
If I put a red fabric under the Sun, what can this fabric be filtered in term of light frequency spectrum?
Thanks in...

Feb2312 03:06 PM
johnbbahm

17 
1,918 
we can calculate the refractive index of liquids like water using a converging lens and mirror by the standard method...

Feb2112 06:48 PM
m~ray

4 
1,602 
Does somebody know what is seismic prospecting? and where can I find more info about it

Feb2212 04:32 PM
davenn

6 
2,860 
How many watts should a 40w bulb use at 120v?

Feb2212 01:21 AM
cmb

8 
1,747 
When classically deriving the Schwarzschild radius of a black hole, the kinetic energy of an outgoing particle (moving...

Feb2312 06:14 AM
mrspeedybob

5 
1,369 
Salutations everyone!
I'm sure this is a simple question for many of you, but I don't understand why doesn't the...

Feb2212 06:11 AM
tinytim

3 
1,242 
Would building a funnel/cone improve the power output of a given windmill?
Let us say, for example, that we have a...

Feb2312 03:12 AM
A.T.

6 
2,090 
I have a shooter that shoots a ball at a fixed angle of 65 degrees from horizontal. The shooter is aimed at 3 targets...

Feb2212 04:37 AM
tinytim

1 
1,054 
Hello,
As I understand, light can travel at the fastest known speed.
What enables it to do so? What prevents...

Feb2212 10:51 AM
tinytim

4 
961 
As we say that current is the flow of charges, but if we dye a conductor with red color and then connect the terminal...

Feb2212 06:49 AM
tinytim

1 
1,022 
how can waves like sound have different wavelengths with same frequency?(Wα1/frequency)
For eg, in air vel=wav*freq...

Feb2212 06:17 AM
nasu

1 
2,547 
taking derivation of distance equation is easy as every body knows.
differentiating distance we get velocity and...

Feb2212 12:40 PM
otomanb

11 
1,552 
I'm in my final year of college and I'm struggling to get a clear idea on the concept of per second squared. I mean a...

Feb2212 02:19 PM
gerechte23

8 
2,071 
Hi I have been reading a lot about how to calculate gas density and I am stumped. What I would like to know is how to...

Feb2312 07:56 AM
MegaMan64

1 
1,128 
Hello,
This is a question that i've been contemplating for the last few days. I was watching a video about black...

Feb2212 10:41 AM
DrStupid

1 
871 
Hi,
My Physics textbook talks about a nucleus disintegrating. What does this mean? I understand that the nucleus...

Feb2312 06:22 AM
esmeralda4

7 
1,300 
Is there a simple mathematical way of proving the left hand side equals the right hand side (see attached image)?
...

Feb2412 06:58 AM
nasu

4 
1,768 
If the net sum of forces is zero , the object moves with constant velocity.(inertial frame)
But , when this...

Feb2312 06:01 AM
Doc Al

17 
3,191 
Hi all,
I have a set of data that is number of counts  vs  angle. I need one angle for a calculation from this...

Feb2212 02:55 PM
chloealex88

0 
554 
Hello,
How would you calculate the impulse during the time which a car drives in a circle. You are given the car's...

Feb2312 08:38 AM
iamhe

6 
1,235 
I need help finding the maximum force of an object from an impulse graph. The graph of the force vs time gives me up...

Feb2212 09:19 PM
azureth

1 
1,453 
Right now I am taking conceptual physics which is the most basic physics class
my college offers.
I am taking...

Feb2212 10:10 PM
PhanthomJay

1 
1,100 
Are there any circumstances, with the proper positioning, where an astronaut may witness rainbows or rainbowish...

Feb2212 11:03 PM
Bobbywhy

1 
1,519 
there is a liquid in a capillary tube. The tube pulls the liquid because of adhesive force and liquid pulls the tube...

Feb2312 07:43 AM
Andy Resnick

1 
844 
Hi,
I have a general question about linear wave equation:
Is solving the linear wave equation is equivalent to...

Feb2312 03:30 PM
mathman

1 
1,286 
Consider water flowing through a restriction with a pressure drop of 4 bar. Inlet pressure is 64 bar and the outlet...

Feb2312 05:10 AM
Dutta

0 
1,275 
Hi!
My friend and me had a theoretical discussion about water in space.
Assuming we will take a glass of water in...

Feb2312 07:31 AM
Drakkith

1 
1,007 
What is exactly one Coulomb? Wikipedia says "One coulomb is the magnitude (absolute value) of electrical charge in...

Feb2312 11:29 PM
cepheid

3 
1,409 
Can someone please explain to me what the difference is between a parameter regression and a linear regression. How...

Feb2412 01:07 AM
absurdist

0 
731 
I'll be selfstudying about chaos theory. I am looking for a comprehensive book on chaos theory which also touches...

Feb2412 03:57 AM
whoyameye

0 
837 
Hi All
I have been wondering a bit about how long time it takes for a mechanical resonator to change resonance...

Feb2412 07:40 AM
Excom

0 
717 