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there is something called as explaining your way?Sis I said, I have only this way, Hadi has other way... he'll help you
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there is something called as explaining your way?Sis I said, I have only this way, Hadi has other way... he'll help you
Sorry sis, I am in the car so typing slow... Going to schoolthere is something called as explaining your way?
Thankyu very much,yu r very helpful :***Sorry sis, I am in the car so typing slow... Going to school
So Here we use the equation - Kinematics eqution - V^2 = U^2 + 2as
As we wanna know the value of v / u this is the only equation which covers our information asked in question...
So when the sphere hits the plate V = 0 and u=u
so we can write that as 0 = u^2 + 2ah taking downwards direction as +ve direction ; that means u^2 = -2ah
And when the ball rebounds, u = 0 and v = v and height is halved.
so , v^2 = 0 + 2(-a)(h/2) = -ah as 2 and 2 gets canceled
so divide v^2 / u^2
= -ah / -2ah = 1 / 2
taking root on R.H.S will remove squares from L.H.S
so,
v/ u = 1 / root 2
Thank you ! so are you as wellHanona
You are doing nice Job.
Thanks HanonaThank you ! so are you as well
Anytime friend ^_^Thanks
Anytime friend ^_^
can anyone explain me mcq number 20 ? how is it A ?
help will be extremely appreciated ?
When the switch is open, current goes through both resistors, since there is no other way for it to go. Tab dekhe to we can say that Voltmeter shows reading V (because there is current going through that resistor R2, so there will be potential difference across the resistor too) and there is some reading I on the ammeter, which is equal to (EMF of Source)/(R1 + R2).
Sagar helped me... and I modified it, simpluAh. I wish my mind worked that way. Thanks a lot!
I got the answer, but you know bored to type as time is moneyIdk who that is, but i appreciate the help. I wasted 20 minutes thinking of a logical reason for that question
Doubts hain ?Haha right.
Nae, all clear.
can u plz solve this question
Q. A mass of a liquid of density ρ is thoroughly mixed with an equal mass of another liquid of density
2ρ. No change of the total volume occurs.
What is the density of the liquid mixture?
A. 4/3 ρ B. 3/2ρ C. 5/3ρ D. 3ρ
BTW the answer is A.
can u plz solve q35. the answer is C.
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