Water flows through a horizontal tube of variable cross section.The area of cross section at A and B are 4 `mm^2 and 2mm^2` respectively. If 1 cc of water enters per second through A find
a) The speed of water at A
b) the speed of river at B
c) the pressure difference `P_A-P_B`.

Answer

A, B, C

Explanation

(a) `(dV)/(dt)=Av`
(b) `(dV)/(dt)=Av`
(c ) Apply Bernoulli's equation