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if t=k(k!),then summation 1to n of t is equal to ??
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sum to 10 terms of the series 1.2.3+2.3.4+3.4.5.......=?
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fundamental quantities r d most basic quantities...which cannot be further resolved in terms of other simpler quantities.....length,mass,time,current,amt of substance r d egs...
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i know dat yaar.....but d ans is not matchin...
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dats exactly wut i did......but they hav given only false as d ans..
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the common ratio of a G.P whose product of four consecutive terms is 81, third of these consecutive terms being 27,is 9.
true
or
false???
my answer is coming to b true....but d printed answer is false....
plz explain..
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noble gases rarely react with other elements or compounds...they have a complete and stable config hence they need not react....only under certain special conditions do they react....
due to this property they r considered noble....and hence called so..
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hi..i m currently in11th standard...
i hav subscribed for brilliants course material <elite>
but i cant find a gud coachin for iit near my house.....
they r all far away....shud i opt for them..(but that wud cost me a lot of time)
or instead self study....
plz help...
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calculate d weight of moon by d followin' data..
G=6.67*10^-11
mass of moon=7.36*10^22
mass of earth=6*10^24
distance =3.8*10^5
dis is damn simple but ma ans. is not matchin'...
ans) 2*10^20
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consider d 1st part of d motion when it reaches d highest point
v=u+at
0=u-gt
t=u/g
now..
s=ut+1/2gt^2
s=1/2gu^2/g^
s=u^/2g
now d second part of motion
v=u+at
3u=0+gt
t=3u/g
now....
s=ut+1/2gt^2
s=9u^2/2g
by subtraction..of d first distance frm d second distance...
h=4u^2/g
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37degrees.....
sorry i forgot to mention it..
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x direction-
f=ma
10N=.01a
a=1000m/s square
s=ut+1/2at^2
=6250m
y direction-
f=ma
5N=.01a
a=500m/s2
s=12500m
=14km in d direction of force
i hope u get it...
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a trolley of mass 200kg moves wid a uniform speed of 36kmph on a frictionless track.a child of mass 20kg runs on d trolley from 1 end to d other(10m away) with a speed of 4m/s relative to d trolley in a direction opposite to its motion,and jumps out of the trolley.what is d final speed of d trolley?how much has d trolley moved from d time d child begins to run?
ans)10.36m/s,25.9m
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