The minute hand of a watch which points towards 3 is turned through `5pi` radian. Where will it come ?

A liquid is flowing through a horizontal pipe of varying cross-section.The velocity of flow is 25 cm/sec at a point where the diameter of the pipe is 5 cm. What will be the velocity of flow at another point where the diameter is 1 cm.

A current I ampere flows in a circular area of wire which subtends an angle of 3pi//2 radians at the centre whose radius is R. find an expression for magnetic induction B at the centre.

Find the vector and cartesian equation of the plane, which passes through the point (5, 2, -4) and perpendicular to the line with direction ratios (2, 3, -1).

Obtain the equation of straight lines : Which passes through the point (3,-4) and is such that its portion between the axes is divided at this point internally in the ratio 2:3 .

Define electrochemical equivalent and chemical equivalent. How are they related with each other ? A current of 5 amperes is passed through an electrolyte for 15 minutes when 3 gms of the metal was deposited. Calculate the electrochemical equivalent of the metal.