## Chapter
9 Problems

**42.
**A liquid
( = 1.65
g/cm^{3}) flows
through two horizontal sections of tubing joined end to end. In the
first
section the cross-sectional area is 10.0 cm^{2 }, the flow
speed is 275 cm/s, and the pressure is 1.20 x
10^{5}
Pa. In the second section the cross-sectional area is 2.50 cm^{2}.
Calculate the smaller section’s
(a) flow
speed and (b) pressure.

Solution