I need opinions on paricles without mass, how can a particle have no mass?.
Thinking of relativity and the increase of mass with acceleration, Why not the photon?.
Just a thought, but what about ...
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Don't think me silly, but the first question is, where do excess neutrons go? If I do a fission reaction and get protons they are just ionized hydrogen atoms, a free electron is just a negative charg...
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I've been wondering if it is possible to encase a magnet in something readily available that would give it more beam-like characteristics vs. field. Basically, I want to have the magnet encased so th...
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Hi guys, these are the final 2 problems that Ive been struggling with for the past day. Please help
1. Four point charges are situated at the corners of a square with sides of length a, as in Figur...
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An updated version:
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1. The problem statement, all variables and given/known data
A spring of spring constant k is suspended from the ceiling with a mass M attached to its lower end. The spring has negligible mass. Show...
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1. The problem statement, all variables and given/known data
Three rigid rods are joined to form an equilateral triangle ABC of side 1m.Three particles carrying charge 1C are placed at the vertices...
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1. The problem statement, all variables and given/known data
A rifle has been sighted in for a 91.4m target. If the muzzle speed of the bullet is v0=427 m/s, what are the two possible angles theta1 a...
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Hi
This small video show you how to differentiate between a Raw and a Boiled egg in a very interesting manner ..enjoy
http://www.metacafe.com/watch/809100...enjoy_physics/ [http://www.metacafe...
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1. The problem statement, all variables and given/known data
A rocket is fired at at speed fo 75.0 m/s from ground level, at an angle of 60.0 deg. above the horizontal. The rocket is fired toward an ...
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1. The problem statement, all variables and given/known data
A gas mixture (80.1 mol% CO2, 12.2 mol% CO and balance Ar) is stored in a gas bottle. The volume of the gas bottle is 317.0 liters. Initia...
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1. The problem statement, all variables and given/known data
A 1500 N crate is being pushed across a level floor at a constant speed by a force F of 700 N at an angle of 20° below the horizont...
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a 1-kW raido transmitter operates at 880kHz. How many photons per second does it emit?
Power=work/time
Power=change in KE/time
f=1/T
T=1/880kHz
so 1 kw=change in KE/1.136x10^-6
change in...
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a 1-kW raido transmitter operates at 880kHz. How many photons per second does it emit?
Power=work/time
Power=change in KE/time
f=1/T
T=1/880kHz
so 1 kw=change in KE/1.136x10^-6
change in...
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Due to mass Space time curves.
Consider the case of sun & earth.
Sun,since it is heavy will curve the space more than earth.isn't it?
Then how come the sun and earth are being pulled towards ea...
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1. The problem statement, all variables and given/known data
Suppose the calibration constant of your spectrometer is 0.5, and suppose the wavelength of the light is λ = 550 nm. How much doe...
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1. The problem statement, all variables and given/known data
Apply Newton's second law to find formulas for the magnitude of the acceleration of the system and for the tension in the cord. Ignore f...
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Can anyone explain to me why Pythagoras' Theorem governs the rate of change, of mass, length and time within accelertated bodies?
It's a simple theorem learnt by most children by the age of eleven, s...
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Hi, I have some questions which I encountered during my thesis-writing, I hope some-one can help me out on this :)
First, I have some problems interpreting coordinate-transformations ( "active...
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What happens when you fall into a blackhole? Now, i know no one can confidently answer this question without a GUT lol (Grand-Unified-Theory). What does string theory have to say about this? What ...
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To join:myLot [http://www.mylot.com/?ref=tyf1112]>
We've heard reports of many myLot users who spend most of the waking hours of any given day enjoying myLot.
"Nothing can be that interesting?" yo...
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I have recently heard about a portugese guy that is trying to prove that the speed of light is changing (of course meaning that speed of light where there is no matter...). He balieves that at the big...
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Hello all,
I was doing some reading on doubly differential cross-sections and was wondering what does this actually measure, in a physical sense. The way I see it, it looks like the differentiation...
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Hi. I am struggling with wave packets.
I know wave packets are generated when two or more waves of slightly different frequencies are superposed together.
When considering only two or finite number ...
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I tried to convince myself it is Diff(M), but I failed.
Most books say Bianchi Identities reduce the independent equations in Einstein's equations by 4, therefore there are some redundancies in the...
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