Messages posted by coolvignesh

hi dear guyz..
we hv so many better problems...
why are u bbreaking ur heads here..
anyway...
i'll tell u one...
mj.. dont u know. .that spider man girl...

average velocity = (v1 + v2)/2
at the instances it crosses half its max height... the vertical components will get subtracted in its formula as vertical components will be same in magnitude and opposite in direction...
so all left is horizontal components at both the points....
horizontal velocity doesnt change as acceleration is 0....
so average velocity = (ucos

+ ucos

)/2 which will come out to be ucos

... hence ucos

is the right answer....

73.5 m is right answer

yeah.. considering this process as isothermal..
what anand did was completely right....
only thing is that u've to convert everything into its SI units...
PV = constant is asolutely fine and best formula to use here..
by that calculate pressure at depth and at surface...
after that, the difference in pressure equals hpg.. where p is density of liquid, h is depth of lake and g is acceleration due to gravity

hey guyz...
i guess others are wrong.....
see. an easy way to tell to tension in these kind of problems is just by seeing the masses and tension for each comes out equal to be their mass ratio...
so one can tell the answer js by looking at the problem that the answer is 0.24 N..

m1=300g, m2=200g and F=0.40N.

the force is 0.4 N...

it accelerates two masses m1 and m2...

so.. (m1 + m2)a= 0.4N

but if u see... the string provides force only for m1 for acceleration...

so.. tension in string = m1.a

a = 0.4/(m1 + m2)

so. tension T = m1.a/(m1+m2)

now just substitute the values of force, m1 and m2

u'll get T = 0.3 x 0.4 / 0.5

= 0.24N

so tension in string comes out to be 0.24 newtons

u guyz are very much right about -1 ox. state of oxygen atom...
but i also want to explain it other way round...
whenever there is a linkage between two O atoms....
we call it peroxide....
it forms such that both the O atoms share each of their electrons....
and to obtain octet, both needs one electron...
so, it has an overall charge of -2.. this is called as peroxide...
the Oxygen in Na2O2 is seen in similar state.... so it is called peroxide...
but in carbon dioxide.. both the O atoms are attached to carbon..

we see orbitals like waves...
when two of those orbitals combine,
two things can happen...
either both can combine constructively
( eg. amplitude of both waves add up)
or can combine destructively
eg. amplitude of both waves get vector subtracted...

during destructive combination... antibonding orital forms.....
and it little destabilizes the atom..

at 0 degree celsius, k.e is not 0J...
it's at absolute 0 when all molecules stop vibrating or undergoing any kind of motion.....

@ computer 001 and einstein
if you look at the tube... it's walls are oblique...
so, when water comes out, it exerts force on the walls normally..
that force is resolved to horizontal and vertical components...
the horizontal component is the force which pushes the tube out and vertical forces cancel out each other in this case..

hey anchit...
thanx a lot yaar...
u're a genius!!!

this is just a fact...
during jurassic period, moon ws much more closer to the earth...
and it looked about 3 times bigger......

hey gandharva..
it's wrong to say that moon is not affected by sun's gravitationsal force....
it is of course attracted by sun's gravitational force..
but the problem is that it is much much closer to the earth....
and as you know.. gravitational force is inversely proportional to distance square..
hence.... gravitational force by earth is much more greater than that by sun...
so, force by sun is js almost negligible to force by earth.....
so, moon becomes earths satellite..

yeAh..
quite right...
the ball's velocity doesnt dcrease, but man's does..
so.. ball will drop in front of him...
far from his hands....

hey hang on guyz....
i think u didnt look it from another angle.....
there is a phase difference of pi b/w both the waves...
as -ve of sintheta is sin(theta +pi)

hey anchit..
can u plz reply....
i'm not able to solve this on eout

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