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seen Dec 18 '13 at 20:50

Feb
28
awarded  Popular Question
Nov
15
comment How long does it take for a metal to reach equilibrium?
@CarlWitthoft what about conduction?
Nov
15
comment How long does it take for a metal to reach equilibrium?
@JohnRennie when the inner eletric field is zero.
Nov
15
comment How long does it take for a metal to reach equilibrium?
Could you just give me some examples? I haven't enough physical and mathematical skills, I just want a rough approximation :)
Nov
15
asked How long does it take for a metal to reach equilibrium?
Jun
13
accepted Do plastic shoes electrically insulate people from the ground?
Jun
13
accepted Not working brakes: just another energy conservation problem
Jun
13
asked LINAC: why are they being accelerated?
Dec
22
comment Do plastic shoes electrically insulate people from the ground?
Thanks a lot for your exhaustive answer but does it mean that using appliances I accumulate charges in my body when I dress plastic shoes? :)
Dec
20
asked Do plastic shoes electrically insulate people from the ground?
Dec
5
awarded  Editor
Dec
5
revised Not working brakes: just another energy conservation problem
added 64 characters in body
Dec
5
comment Not working brakes: just another energy conservation problem
The correct result (reported on the textbook) is 120 m. If I do what you say, the result is 35,17 m, isn't it? Thanks
Dec
5
reviewed Approve suggested edit on Not working brakes: just another energy conservation problem
Dec
5
asked Not working brakes: just another energy conservation problem
Dec
5
comment Energy problem: What's wrong here?
Thanks again! ;)
Dec
5
accepted Energy problem: What's wrong here?
Dec
5
comment Energy problem: What's wrong here?
@namehere same thing, in fact $t_0=0$, sorry for not enough clearness ;)
Dec
5
awarded  Commentator
Dec
5
comment Energy problem: What's wrong here?
@namehere No, I used without distinction $v$ and $\Delta v$, because the first velocity was zero. The problem was a conversion error. Thank you too ;)