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Bsc Physics


Mar
24
revised Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
added 15 characters in body
Mar
24
revised Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
added 15 characters in body
Mar
24
revised Can we generate electric current by injecting electrons into a copper panel
Insert image, minor formating etc for readability.
Mar
24
revised Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
added 136 characters in body
Mar
24
answered Is there a formula that gives the position of an object depending on the time, but which doesn't allow the object to surpass the speed of light?
Mar
23
comment Electricity should deform the conductor then why doesn't it?
@Bhavesh: Did you read the whole article? It says: "Now everyone will rightly tell me that the protons within wires cannot flow, while the electrons can. Yes, this is true... but only true for metals. And it's only true for solid metals. All metals are composed of positively charged atoms immersed in a sea of movable electrons. When an electric current is created within a solid copper wire, the "electron sea" moves forward, but the protons within the positive atoms of copper do not. "
Mar
23
comment Convection and radiation heat transfer
@Keith: Wouldn't an object at 900K emit a considerable amount of Infra-red light? Isn't iron red-hot at about 800K?
Mar
23
comment How does water pressure manifest itself on the molecular level?
Just a note: That's 8 overt questions (containing about 15 question marks) in one Physics.SE question. If you find your question doesn't get the attention you expect. you might consider re-composing it in a more succinct form concentrating on fewer points.
Mar
22
revised Determining the direction of friction of a pole leaning on a block
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Mar
22
revised Determining the direction of friction of a pole leaning on a block
Meaningful title, commas instead of ellipses, capitalisation.
Mar
22
comment Determining the direction of friction of a pole leaning on a block
How did you calculate your answer?
Mar
13
comment What happens in a gas of magnets?
newsoffice.mit.edu/2009/magnetic-gas-0918
Mar
4
revised Is there a difference between velocity and drift velocity?
Add a picture
Mar
4
comment Is there a difference between velocity and drift velocity?
@tom: Your question is a perennial one on SE meta. There are arguments for and against linking to closed questions. E.g. closed questions can be reopened.
Feb
26
revised Surface tension and soap bubbles
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Feb
26
answered Surface tension and soap bubbles
Feb
26
revised Why am I not accelerated by the reaction force applied by Earth on me?
added 355 characters in body
Feb
26
answered Why am I not accelerated by the reaction force applied by Earth on me?
Feb
23
comment Forces acting on a ball when its squeezed
This is more of an engineering problem than a physics problem isn't it? Also you don't specify important factors like size of ball, whether ball is desk-mounted or free, whether the hand holds the ball or rests on it, size of hand, number of degrees of control needed and so on. Fortunately you have two-built-in sensor-rich appendages (AKA fists) you can use for empirical testing. Mine suggest the answer is "under the fingertips". Your Mileage May Vary.
Feb
17
comment How much time would it take for a free-falling ghost-like object to cross the entire Earth?
But the Earth isn't of uniform density, nor I imagine is any planet (i.e. any body in hydrostatic equilibrium). So this isn't a question about Earth or other real or hypothetical planets?