**Question 8: A liquid passed through a pipe and it was found that the rate of influx is equal to the rate of efflux. What information do you get about the liquid?**

ANSWER

If the rate of influx is equal to the rate of efflux, this means the volume of fluid flowing in per second is equal to the volume of fluid flowing out in one second. Thus the fluid flow satisfies the equation of continuity.

Where A_{1} is the cross-sectional area of the pipe at the entrance and A_{2} is its cross-sectional area at the exit.

v_{1} is the velocity of the liquid at A_{1} and v_{2} is its velocity at A_{2}.

#### Information about the liquid

If the equation of continuity holds, then it indicates that the fluid has a steady flow and that the fluid is incompressible and non-viscous.