Question

A constriction in a pipe reduces its diameter from 4.0 cm to 2.0 cm. Where the pipe is wide
The fluid velocity is 8.0m/s. Where it is narrow the fluid velocity is:

Answer 1

According to the continuity equation (also known as "what goes in must come out"), Area * Velocity is a constant.

The area is reduced by a factor of 4.

So the velocity must increase by the same factor.

Answer 2

what equation do i use to figure that out?

Answer 3

V*A = constant.

It is a "steady state" equation

Answer 4

balalla