Saturday

February 28, 2015

February 28, 2015

Posted by **mymi** on Monday, November 7, 2011 at 3:42am.

(a) What is the volume flow rate at the exit?

(b) What is the acceleration at the exit? The length of the nozzle is 2 m.

(c) If the volume flow rate through the nozzle is increased to 7 m3/s, what is the acceleration of the fluid at the exit?

I got the correct answer for a which is 3.27 m^3/s, help me on part b and c please.

- Physics -
**drwls**, Monday, November 7, 2011 at 5:29am(b) and (c) are poorly worded questions. Once the water reaches the exit, acceleration stops. Prior to that, while water is still in the channel,

V*A = b^2*V = constant

= volume flow rate, Q

b is the side length of the square water channel

2 ln b + ln V = 0

(1/V)dV/dt = (1/V)*acceleration

= -2 (db/dt)(1/b)

= -2 (db/dx)*(1/b)*V

acceleration = -V^2*(1/b)*db/dx

To get an answer, you need to know the distance over which the side length b decreases from 0.64 to 044 m.

**Answer this Question**

**Related Questions**

Physics - The nozzle of a fountain jet sits in the center of a circular pool of ...

physics - Water flowing through a garden hose of diameter 2.73 cm fills a 25.0-L...

PHYSICS!!! - Water flowing through a garden hose of diameter 2.72 cm fills a 25....

physics - Water flowing through a garden hose of diameter 2.77 cm fills a 25.0 L...

quiz - Suppose you adjust your garden hose nozzle for a hard stream of water. ...

Physics - Water flowing through a garden hose of diameter 2.77 cm fills a 25.0-L...

Physics - Water flowing through a garden hose of diameter 2.77 cm fills a 25.0-L...

Physics - Water flowing through a garden hose of diameter 2.77 cm fills a 25.0-L...

Physics help 2 please ** - A garden hose is attached to a water faucet on one ...

Physic - Water flowing through a garden hose of diameter 2.77 cm fills a 25.0-L ...