iTeachChem
A Study Community for Everyone and Everything.We have weekly sessions on Spirituality, Math and Science! JEE, NEET prep? All doubts are crowdsourced. Hare Krishna!
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iTeachChem
A Study Community for Everyone and Everything.We have weekly sessions on Spirituality, Math and Science! JEE, NEET prep? All doubts are crowdsourced. Hare Krishna!
JoinRelative Motion Doubt
While calculating time taken to reach Q, we should consider velocity of man wrt belt right? So that means time taken = 20/1.5 = 13.33secs
But the answer given is 10secs which we will get if we take velocity of man wrt ground
So why should we take velocity of man wrt ground instead of velocity of man wrt belt...
Modern Physics/EMW
Exactly how is the energy being transfered to the sphere if all the light passes through the hemisphere? Also what should be the approach to this?
PnC
How to do the 4th option
i tried doing it the normal way for least and then subtrating the cases where G1 and M1 are together i dont get ans
2B 2G = 120
3G 1B = 50
4G 0B = 5 ...
PnC
for first case it is same as mine but for second case ,i did
7C5 to select 5 members from Y , then 5! to map those 5 members , then the remaming 2 have 5 x5
so 7C5 x 5! x5 x 5 but i am not getting ans...
Amines/Elimination
After MeI makes N(Me)3+, shouldn't there be E1cb reaction to form (3)?
Answer:(2)...
Kinematics Doubt
in this problem, why can't we take the height as 2 m while calculating the time of flight for finding umin?
If the take height as 2m then time of flight increases, which overall decreases the horizontal velocity...
Binomial
m = 1 (smallest +ve int)
if we put it in the last line we can club them again and hence n comes out to be 0 , but why isnt he clubbing , he started solving and ans is not n =0...
Kinetics
how do i find R in terms of Rt
R = rotaion
At a time t = rotation of Sucrose = R0 - R
i cant find R in terms of Rt as we do in pressure rate law...
