Homework Help

What is the speed of the water in the narrower section of pipe, if water flows through...

user profile pic

sodelete | Student, College Freshman | (Level 1) Honors

Posted July 8, 2011 at 2:04 AM via web

dislike 0 like
What is the speed of the water in the narrower section of pipe, if water flows through a pipe of cross sectional area 10 cm^2 with speed 34 cm/s?

The pipes cross sectional area then narrows to 5 cm^2 further downstream.

1 Answer | Add Yours

user profile pic

giorgiana1976 | College Teacher | (Level 3) Valedictorian

Posted July 8, 2011 at 2:34 AM (Answer #1)

dislike 0 like

This problem requires the continuity equation to determine the speed of water in the narrower section:

A1*v1 = A2*v2

A1 = 10 cm^2 and A2 = 5 cm^2

v1 = 34 cm/s and v2 has to be determined:

10*34 = 5*v2

v2 = 10*34/5

v2 = 68 cm/s

The speed of water in the narrower section of the pipe is v2 = 68 cm/s.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes