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Physics
A non-conducting disc of radius ‘a’ and uniform positive surface charge density is placed on the ground, with its axis vertical. A particle of mass m and positive charge q is dropped, along the axis of the disc, from a height H with zero initial velocity. The particle has q/m = (a) Find the value of H if the particle just reaches the disc. (b) Sketch the potential energy of the particle as a function of its height and find its equilibrium position.
Chemistry
Which one of the following will react faster with H₂ under catalytic hydrogenation condition?
Mathematics
If C_k stands for ⁿC_k then equal to