Awater pipe with a 5 cm inner diameter is designed for to have a flow rate of 75 umin. what is the entrance length for this pipe (in cm)?

121.20 cm

Explanation:

Given data in question

inner dia = 5 cm

flow rate = 75  umin = 1.25 ×10³ cm³/sec

Solution

First we calculate Re by this formula

Re=  =

Re=

here we know Q is flow rate and D is dia of pipe and v is kinematic viscosity that is 1.14 × cm ² / sec

so Re=

Re =

So Re will be 27936 that is greater than 4000 thats why it is turbulent flow

and we know ≡ 4.4

so ≡ 24.24

length will be 121.20 cm

false

a hangover caused by drinking a lethal dosage of alcohol

answer:

(b)

explanation: