At what speed is the water in the hose moving?

[Jtappan]

Homework Statement

A nozzle of inner radius 1.03 mm is connected to a hose of inner radius 7.97 mm. The nozzle shoots out water moving at 25.5 m/s.
(a) At what speed is the water in the hose moving?
42.589 cm/s
(b) What is the volume flow rate?
84.989 cm3/s
(c) What is the mass flow rate?
_____g/s

Homework Equations

The Attempt at a Solution

I have found the speed of the water and the volume flow rate. I do not know how to find the mass flow rate though. Can anyone help me?

 

[Dick]

Mass flow rate and volume flow rate are connected by the density of water, right? Since that is mass/volume.

 

[BlackWyvern]

Part of Bernoulli's Principle is that the mass that leaves the pipe, must be the same as the mass that enters the pipe.

 

[Jtappan]

I am still confused on how to find this though. do i just multiply by Rho of water?

 

[Jtappan]

I can't get this one either...i know they are connected by the density but i don't know what to do with the density

 

[stewartcs]

Mass flow rate = Volumetric flow rate times the fluid's density.

Volumetric flow rate = fluid velocity times the cross-sectional area.

 

[Jtappan]

ahh i just was not converting right thanks for the help!