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Bsc Physics


11h
comment Is there always an equilibrium point in space for gravity?
Intuitively yes, because the gravitational field is continuous (isn't it?) and therefore there must be local maxima between the minima at the point masses. Or vice versa if you are not thinking about rubber sheets?
1d
revised Why does iron sink in molten iron instead of floating?
Remove quotation markup from text that doesn't look like a quotation. Tidy up spelling, grammar and formatting while I'm here.
2d
awarded  Popular Question
Nov
13
comment Does water diffuse trough rubber of car tire of when liquid or only as gas
In normal air, water comprises no more than 1% by volume. So it isn't an important factor for tire inflation compared to oxygen (~21%). See also How does air escape from a pneumatic tire?
Nov
10
awarded  Autobiographer
Nov
10
answered Energy and work
Oct
31
revised how can an egg be balanced on a nailhead on equator
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Oct
31
answered how can an egg be balanced on a nailhead on equator
Oct
28
comment Why would the lack of air in a mine in an asteroid prevent you from flooding it?
@Burhan: I'm pretty sure Olin means boil when he writes boil.
Oct
27
comment A question about a body moving in horizontal circular motion
@Sashurocks: There are two aspects to tyre friction: rolling resistance in the direction the tyre is rolling and a sideways friction opposing the sideways slipping of the tyre. If the tyre is not slipping sideways, you can regard the second as static friction. It acts opposite the direction the tyre would otherwise slip towards.
Oct
24
comment what kind of wings would a person need to fly?
@isomorphismes: Your question how do aircraft wing designers arrive at the wing dimensions might get a good answer at aviation.stackexchange.com. There appear to be aircraft designers there. Other refs: 1
Oct
24
comment Can we extract chemical energy remotely?
Fat stored in the body isn't (all) useless. Your body evolved this capability as an energy store for hard times. You can (eventually) use fat to make electricity by turning a hand-cranked generator like those in numerous torches. Apart from surgery, "Working out mechanically" is probably an efficient way of depleting your stored energy reserves (fat).
Oct
23
revised what kind of wings would a person need to fly?
added 45 characters in body
Oct
23
revised what kind of wings would a person need to fly?
added 125 characters in body
Oct
23
revised what kind of wings would a person need to fly?
added 677 characters in body
Oct
23
answered what kind of wings would a person need to fly?
Oct
21
answered Benefits of rear spoiler in cars
Oct
21
answered Why can't we reach the ends of rainbow?
Oct
16
revised How would the solar system change if the Earth were removed
added 77 characters in body
Oct
16
asked How would the solar system change if the Earth were removed