E and F In a water pistol, a piston drives water through a larger tube of area A1 into a smaller tube of area A2 as shown in the figurebelow. The radius of the large tube is 1.40 cm and that of the small tube is 1.10 mm. The smaller tube is 3.00 cm above the largertube.A2FA(a) If the pistol is fired horizontally at a height of 1.60 m, determine the time interval required for water to travel from thenozzle to the ground. Neglect air resistance and assume atmospheric pressure is 1.00 atm..58(b) If the desired range of the stream is 7.50 m, with what speed v2 must the stream leave the nozzle?12.9m/s(c) At what speed vi must the plunger be moved to achieve the desired range?7.9X m/s(d) What is the pressure at the nozzle?1.01e5Pa(e) Find the pressure needed in the larger tube.Pa(f) Calculate the force that must be exerted on the trigger to achieve the desired range. (The force that must be exerted isdue to pressure over and above atmospheric pressure.)X N

The speed of the plunger, v=r22×vnozzler12=1.10×10-3 m212.9 m/s1.40×10-2 m2=0.0796 m/s

In a water pistol, a piston drives water through a larger tube of area A, into a smaller tube of area A, as shown in the figure below. The radius of the large tube is 1.40 cm and that of the small tube is 1.10 mm. The smaller tube is 3.00 cm above the larger tube.

In a water pistol, a piston drives water through a larger tube of area A, into a smaller tube of area A, as shown in the figure below. The radius of the large tube is 1.40 cm and that of the small tube is 1.10 mm. The smaller tube is 3.00 cm above the larger tube.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter15: Fluids

Section: Chapter Questions

Problem 46PQ

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Question

E and F

In a water pistol, a piston drives water through a larger tube of area A1 into a smaller tube of area A2 as shown in the figure
below. The radius of the large tube is 1.40 cm and that of the small tube is 1.10 mm. The smaller tube is 3.00 cm above the larger
tube.
A2
F
A
(a) If the pistol is fired horizontally at a height of 1.60 m, determine the time interval required for water to travel from the
nozzle to the ground. Neglect air resistance and assume atmospheric pressure is 1.00 atm.
.58
(b) If the desired range of the stream is 7.50 m, with what speed v2 must the stream leave the nozzle?
12.9
m/s
(c) At what speed vi must the plunger be moved to achieve the desired range?
7.9
X m/s
(d) What is the pressure at the nozzle?
1.01e5
Pa
(e) Find the pressure needed in the larger tube.
Pa
(f) Calculate the force that must be exerted on the trigger to achieve the desired range. (The force that must be exerted is
due to pressure over and above atmospheric pressure.)
X N

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