A fluid flows through a pipe consisting of two segments. If the cross sectional area increases, which will decrease? a. velocity
b. mass
c. flow rate d. density

A. Velocity

Explanation:

The fluid flow through a pipe has the constant flow rate, so:

Q1 = Q2

Then, A1 V1 = A2 V2

That means, if A1 increases, V1 will decrease in order to keep the flow rate constant. Mass stays the same since it has the same system, which is pipe. Flow rate stays the same, and density also stays the same since it consists of one type of fluid (i.e. water).

this a false

explanation:

area of focus