A garden hose is attached to a water faucet on one end and a spray nozzle on the

Question

A garden hose is attached to a water faucet on one end and a spray nozzle on the other end. The water faucet is turned on, but the nozzle is turned off so that no water flows through the hose. The hose lies horizontally on the ground, and a stream of water sprays vertically out of a small leak to a height of 0.78 m. Find the gauge* pressure of the water:

a.) inside the hose, sufficiently far from the hole 7644

b.) halfway up to the top of the spray.

c.) at the top of the spray. 0

I cannot figure out how to answer b. I tried 3822 but it was incorrect.

Explanation / Answer

velocity of the water when got out of the leak

v^2=2gh.

so v=sqrt(2gh)

V = sqrt( 2 * 9.8 * 0.78)

V = 4 m/s

From Bernoulli's equation

D*v^2/2 + P = constant

so

1000*4^2/2 +10^5=P

so P=1.08*10^5 Pa

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.