Question

Water flows smoothly through a pipe with various circular cross-sections of diameters 2d, 6d, and d`. What is the order of the diameters from smallest to largest?

1) d, 2d, 6d
2) 2d, d, 6d
3) 6d, 2d, d
4) d, 6d, 2d

Answer 1

The order of the diameters from smallest to largest is 2d, d, 6d.

Step-by-step explanation:

The order of the diameters from smallest to largest is 2d, d, 6d.

According to the information provided, when fluid flows through a pipe with different circular cross-sections, the fluid will flow faster through the portion of the pipe with the smaller cross-sectional area. The continuity equation states that the product of cross-sectional area and velocity at one section must be equal to the product of cross-sectional area and velocity at another section.

In this case, if the smallest diameter is represented by d, then the order of the diameters would be 2d, d, 6d.