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## Homework Statement

q1.

a)Explain the terms stream-tube.

b)State the equation of continutity along a stream-tube for an incomperssible fluid.

c)A hosepipe with an internal cross sectional area A1 has at its end a nozzle with a hole whose cross-sectional area is A2 (A2<A1). If the speed of the water as it emerges from the nozzle is vo, determine its speed in the hosepipe. Also, determine the excess pressure inside the hosepipe, which is horizontal.

## Homework Equations

p + pgh + 1/2 pv^2

## The Attempt at a Solution

a) A thin bundle of adjacent streamlines forming a stream tube.

b) equation of continutity :

v1*d*A1 = v2*d*A2

for an incompressible fluid.

c)

p + Pgh + 1/2 Pv^2

v1*d*A1 = v2*d*A2

V1= vo

need help on this