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Apr
26
comment The mass-energy equivalence is a principle which can not be derived from anything?
Hi Sophomore_Jinx. Your question seems an obvious duplicate to me. If you'd like to edit your question to explain what you want to know that isn't covered by the previous question I will withdraw my close vote.
Apr
26
comment How do you state the quantized radial acceleration of an orbiting electron?
Electrons don't orbit the nucleus. I assume you're referring to the Bohr model, but this is a classical model and does not provide an even remotely realistic description of the electrons in an atom. There is no radial acceleration so there is nothing to quantise.
Apr
26
comment what happens to light when it passes through a magnetic field of infinite feild strength?
It is impossible to say anything useful about an infinite field strength as that would require a unified field theory that doesn't exist.
Apr
26
comment Does the constancy of the speed of light in vacuum hold for any observer in GR as well?
I don't want to vote to close because that will close the question immediately. However I think the combination of the two questions I've linked above is a duplicate of this question. A search of this site will find many related questions.
Apr
26
comment Does the constancy of the speed of light in vacuum hold for any observer in GR as well?
Also a possible duplicate: Does the speed of light vary in noninertial frames?
Apr
26
comment Does the constancy of the speed of light in vacuum hold for any observer in GR as well?
Possible duplicate of: Speed of light in a gravitational field?
Apr
26
comment Can maximum KE and maximum PE be different in SHM?
Hint: the total energy is conserved so the sum PE + KE is constant.
Apr
26
comment Did the Big Bang happen at a point?
Hi Avinash, are you talking about an embedding of the 3+1D universe in a 4+1D spacetime?
Apr
26
comment non constant acceleration problem
@MurrayMackenzie: yes, divide the period by four to get the time from releasing the string to the arrow leaving the bow.
Apr
25
comment Why would a black hole evaporate?
Hi Jiminion. See the two questions I've linked. Evaporation isn't due to one particle being a particle and the other being an antiparticle. It's due to one particle having a negative energy and the other having a positive energy. So your question is based on a misunderstanding of the physics involved. However I sympathise because the popular science explanation of evaporation gives entirely the wrong impression of the process.
Apr
25
comment Why would a black hole evaporate?
See also: Why doesn't Hawking radiation cancel itself out?
Apr
25
comment Why would a black hole evaporate?
Possible duplicate of: Black holes and positive/negative-energy particles
Apr
25
comment Would colliding Magnetars create Gravito-Magnetic waves?
What do you mean by Gravito-magnetic waves. If you're referring to gravitoelectromagnetism then this is just an approximate way of doing GR calculations, not anything separate from GR. In any case it wouldn't be applicable to strong field phenomena like merging neutron stars. Merging magnetars would surely emit lots of EM waves, but any merging bodies would.
Apr
25
comment Quantum mechanics - “God does not play dice” - does he? Or might he not?
See also Is the uncertainty principle a property of elementary particles or a result of our measurement tools?.
Apr
25
comment Mechanical properties crown cap
@lucas: this is a crown cork
Apr
25
comment Mechanical properties crown cap
Hi and welcome to the Physics SE. I'm afraid this is an engineering question and out of place here. You could try asking on the Engineering Stack Exchange.
Apr
25
comment When only part of the surface an object is in contact with has friction, what is the normal force I should use?
Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
Apr
25
comment Why is 1 kg of cotton heavier than 1 kg of stone?
Possible duplicate of Is a block of cotton heavier than a block of iron?
Apr
25
comment Energy efficiency in modern houses
I'm not sure this is really a question about physics. Have a Google for heat pump and you should find useful info.
Apr
25
comment Explain how to calculate the Tension generated by a zip line no cartenary
Hi Isaac and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.