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Show that the force of attraction between two short magnets of moment m and m' with their centres d distance apart and their axes in the same direction along the same lines is (mu_(0))/(4pi) (6mm')/(d^(4))

___ has been established as the annual ‘International Day of Happiness’.

Find the internal pressure p_i of a liquid if its density rho and specific latent heat of vaporization q are known. The heat q is assumed to be equal to the work performed against the forces of the internal pressure, and the liquid obeys the Van der Waals equation. Calculate p_i in water.

A particle of mass m starts to move with acceleration a=A cos t .The De-Broglie wavelength associated with this particle at time t=(pi/2)s will be "

It is easier to start a car engine on a hot day than on a cold day. This is because the internal resistance of the car battery

Mother asked Jheel to eat one fruit on the first day, two on the second day, and so on Jheel was very happy. But started crying because on the tenth day she had to eat………..fruits.

A path of uniform width surrounds a circular park. The difference of internal and external circumference of this circular path is 132 metres. Its width is : (Take pi = (22)/(7) )