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Gravitational acceleration at an unknown height is \(1ms^{-2}\). An object is falling from there . How long time it will take to fall on ground ?

(Assume there is no air )

What is is the equivalent resistance between \(A\) and \(B\) ? The numbers are in \(Ohm\) unit .

Give the full solution .

A water drop of \(18 \times 10^{-3} g\) falls from a charged sphere . The drop's charge is \(10^{-9} C\) . There remains ...

There are \(n+m\) coins in a bag. In the bag \(n\) of them are fair (equal probability of outcomes) and \(m\) of them are double sided heads (heads on ...

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