Question

The question concerns water flowing in or from a hose. The cross section of the hose is circular. The circumference of a circle is 2πR and the area of a circle is πR², where R is the radius of the circle. 1 milliliter = 1 cm³.

If the inner diameter of the hose is 1.2 cm, but you partially cover the opening of the hose leaving an open area of 0.3 cm²at the end of the hose. The water flows out at 3.3 m/s. What is the speed of the water flowing in the hose in meters per second while you're spraying your former friends?

Answer 1

Volume flow rate =AU using continuity equation All, = A.Uz IT RUF IT R².0, 2 u = R2 Ri ريا 2 6,= us (A 2 0.3 4 = 363 1.2 4 = 0.20625m/s speed of water in hose.