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!
JoinMechanics, taut string
I don't understand the question 🤷 Isn't the string already taut? What am I supposed to do here
Solubility in Chloroform
(from reneet 2024)
Official key actually says it's option 3. How do you differentiate between option 1 and 3 and what is the reason for 3 being correct?...
PnC
i have done first 5C1 x 3C1 x 2 x 4
5C1 for selecting 1
3c1 for selecting a colour
2 because adjacent will have 2 ways
4 because the most away will have 4 choices , lets say i chose the chosen one as red...
Concentration terms
pretty washed up so can someone explain what this a-x breaking into some-x and another x means? Is this some sort of concentration?
Current Elec
sir's ans is 0.26
assuming I1 goes towards R1 and I2 towards R2
R3 = 312
372 I1 = 50
I1 = 0.1344086022...
Differential calculus? Honestly, idk.
Q.1 and Q.15 had me stumped.
I forgot the method for depressed cubics so I couldn't even factorise the function in 1.
As for 15, I don't understand how we solve the DE with an inequality? If it was an equation, then characteristic quadratic gives us the solution, but with a ≥, I have no clue....
Relative 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...
