gleem
 Name:
 Gary Marolt
 School:
 About:
 I'm an old physicist trying to recover some of the physics that I knew many decades ago. If you don't use it you lose (a lot of) it.
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0 
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aryandecoolest:
Group Title
A radio active material has half life of 600 years and 300 years for alpha and beta emission resp. The material decays when simultaneously a…
 updated an hour ago
 3 replies
 No Medals Yet
Mathematics

Agent_A:
Group Title
Physics II: Gauss' Law Question (typing it, hold on)
 updated 19 hours ago
 5 replies
 No Medals Yet
Mathematics

rogolf2:
Group Title
I have a small lake near my house. On one occasion, a perfectly calm sunny day when the temperature was near freezing, I noticed the surface…
 updated 21 hours ago
 1 reply
 No Medals Yet
Mathematics

amilapsn:
Group Title
What is the equivalent capacitance of the following circuit?
…
 updated 21 hours ago
 2 replies
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Mathematics

Catch.me:
Group Title
Why angular velocity is perpendicular on the plane of rotating? I knew it's from cross product,but I am looking for physical meaning.
 updated yesterday
 3 replies
 1 Medal
Mathematics

shanu22:
Group Title
A room has one wall made of concrete, one wall made of copper, and one wall made of steel. All of the walls are the same size and at the sam…
 updated 3 days ago
 2 replies
 No Medals Yet
Mathematics

Angu:
Group Title
what is the difference between wavefunction and a wavevector?
 updated 3 days ago
 1 reply
 1 Medal
Mathematics

Dexter810:
Group Title
Can somebody explain me the meaning of this question .
A glass rod of diameter d=2mm is inserted symmetrically into a glass capillary tub…
 updated 3 days ago
 3 replies
 No Medals Yet
Mathematics

Mashy:
Group Title
Help resolving twin paradox.
Yes... one of the most confusing apparent paradox to solve :P. Now in many websites and books including the…
 updated 3 days ago
 42 replies
 1 Medal
Mathematics

Mashy:
Group Title
I had a small doubt in pool physics..
I just googled, the average speed when a cue strongly strikes a ball.. its about 10m/s.
…
 updated 8 days ago
 11 replies
 1 Medal
Mathematics

physical.yogaling:
Group Title
For a dipole, why is the electric potential zero directly in the middle?
 updated 12 days ago
 12 replies
 2 Medals
Mathematics

Dunce:
Group Title
How do I integrate the electric field of an infinite horizontal line charge at some distance y above the line of charge, using trigonometric…
 updated 19 days ago
 1 reply
 No Medals Yet
Mathematics

hardequalsmath:
Group Title
DIAGRAM BELOW
In this rather strange pattern of gravitational equipotential surfaces, which of the locations will have the weight vector o…
 updated 20 days ago
 2 replies
 2 Medals
Mathematics

Dexter810:
Group Title
Two cells , two resistors and two capacitors are connected as shown in figure . The charge on 2 microfarad capacitor is ?
 updated 17 days ago
 27 replies
 1 Medal
Mathematics

Akhilender:
Group Title
here is the question:
 updated 24 days ago
 3 replies
 1 Medal
Mathematics

Reyzalex:
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Why does an electric field generate a magnetic field, is it due to the fact that electrons have a spin and this spin generates it ? and why …
 updated 23 days ago
 1 reply
 No Medals Yet
Mathematics

anitaasks:
Group Title
Two particles are executing simple harmonic motion with same amplitude and frequency about the same equilibrium position. They pass each oth…
 updated 20 days ago
 6 replies
 1 Medal
Mathematics

stylestar5678:
Group Title
How can Newton's second and third law both be true at the same time for a falling object? Explain.
 updated 24 days ago
 9 replies
 2 Medals
Mathematics

Sunflower101:
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A raft has a mass of 35.0kg. there are two people on the raft. one has a mass of 45.0kg and the other has a mass of 50.0kg. how many cubic m…
 updated 26 days ago
 3 replies
 No Medals Yet
Mathematics

suzanka:
Group Title
Derivation of the Liouville theorem in statistical mechanics
I was trying to follow the derivation of the Liouville theorem here: http://…
 updated 28 days ago
 3 replies
 No Medals Yet
Mathematics

saiken2009:
Group Title
really confused here....dielectric constant....
 updated 27 days ago
 98 replies
 1 Medal
Mathematics

styx_83:
Group Title
work done by performing a reversible, isothermal compression of 2 moles of an ideal gas at T = 300K from V1 = 2L to V2 = 1L.
i get 3456…
 updated 27 days ago
 4 replies
 No Medals Yet
Mathematics

AlexandervonHumboldt2:
Group Title
my complete physics Journal
Intersting things!\Give Medals if you like it!
 updated 21 days ago
 37 replies
 17 Medals
Mathematics

wilston123:
Group Title
why is tidal power considered a two way system
 updated one month ago
 6 replies
 1 Medal
Mathematics

joiemarie7:
Group Title
PLEASE HELP ME!!!!!!!!!!! Using 6400 km as the radius of Earth, calculate how high above Earth’s surface you would have to be in order to we…
 updated one month ago
 25 replies
 No Medals Yet
Mathematics

tbing5:
Group Title
what is the difference between centripetal acceleration and centrifugal acceleration ?
I will give a medal
 updated one month ago
 21 replies
 2 Medals
Mathematics

Mashy:
Group Title
Is the Debroglie derivation correct?
He used E=mc^2 for a photon? How can you use E=mc^2?
I thought that was only true for particles at …
 updated one month ago
 12 replies
 1 Medal
Mathematics

svaquero1:
Group Title
how do you find the approximate uncertainty, of a sphere of radius 1.96 ± 0.01 m?
the Volume is 31.5
 updated one month ago
 4 replies
 1 Medal
Mathematics

TheNewNewton:
Group Title
THE EFFECT OF TEMPERATURE ON MAGNETIC FLUX DENSITY IS WELL ESTABLISHED. HOWEVER I AM UNABLE TO FIND AN EXACT EQUATION FOR THE RELATIONSHIP B…
 updated 22 days ago
 3 replies
 1 Medal
Mathematics

Mendicant_Bias:
Group Title
I'm having trouble understanding how the following circuit diagram is correct or reasonable; it's the polarities that are confusing me. Post…
 updated one month ago
 20 replies
 1 Medal
Mathematics
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