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It is a case of a baton .
They both move about their center of mass
Consider M to be at the origin(0,0)
and m to be at(L,0).
Find C.m and then solve.(2 star systems)
For special case of M>>m
we solve normally as for
earth around sun
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to me B and C appear to be in a straight line and hence velocity is same at both the points
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Its not wrong.
Friction never depends on area of contact
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Auroras are produced by the collision of charged particles, mostly electrons but also protons and heavier particles, from the magnetosphere, with atoms and molecules of the Earth's upper atmosphere.
Most originate from the sun and arrive at the vicinity of earth in the relatively low-energy solar wind.
When the trapped magnetic field of the solar wind is favourably oriented (principally southwards) it reconnects with that of the earth and solar particles then enter the magnetosphere and are swept to the magnetotail. Further magnetic reconnection accelerates the particles towards earth.
For a better picture go to:
http://en.wikipedia.org/wiki/Aurora_%28astronomy%29
Some days back there was a special episode on discovery on earth's magnetism.There u cud have easily visualized the effects.
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1-a
2-b
3-b
4-1350 N
5-a - q, b - pr, c-pr, d-rs
6-abc
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Fifa-08 (current)
Other favs
Prince of Persia (All 3)
Max Payne:2
Hitman
Call of Duty
Chessmaster
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How do study such huge books
I do Sanyal(very concise) along wid Ncert ofcourse
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ya porshe is correct
nice approach
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Though it is already solved.
Anoder way to solve question when all options in one form
sin-1(sinx+cox)/a+c
Differentiate it and equate it wid given integrand.
u'll get ur ans in a jiffy.
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The main aim behind joining these is not learning few problems or questions.
Rather it's a simulation of real xam and helps u develop a strategy for IITJEE.
Again a student sittin in IITJEE xam for 1st time will be more nervous than one
previosly appeared similar tests.
Although assessment is also a point.If u get -12 marks den it'll force u to study more.So no harm done.
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Sorry perhaps i am incorrect
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 E=W+Q
Since Q=0 (adiabatic)
 E=W=10 Lit atm.
(Convert units)
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we need P(hit twice or more)>0.99
So P(hit never)+P(hit once)<0.01
=> 0.5n + n(0.5)n < 0.01
We get n=10(min. value)
Hope u get me.
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Newayz in c as t-> 0
it is same as startin time na?
so it wil be in start posn.
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