Question

Water from a top of diameter 2.0cm is flowing 3 litre/min. Coefficient of viscosity of water is 10 -3 decapoise. State whether the flow is streamlined or turbulent?​

Answer 1

Answer:

Explanation:

Given ,

r1 = 2.0cm

r2 =?

V1=1m/s

V2=20m/s

Solution

According to equation of contynuity

A1×v1=A2×v2

πr1^2×v1=πr2^2×v2

r1^2×v1=r2^2×v2

r2=r1×√v1÷v2

r2=1√1÷√20

r2=1/√20

=0.2236 cm

Diameter of a nozzle is

D=2×r2

2×0.2236=0.4472 cm