In a water pistol, a piston drives water through a large tube of area A1 into a

Question

In a water pistol, a piston drives water through a large tube of area A1 into a smaller tube of area A2. The radius of the large tube is 1cm and that of the small tube is 1mm. The smaller tube is 3cm above the larger tube. a) If the pistol is fired horizontally at a height of 1.5 m, determine the time interval required for the water to travel from the nozzle to teh ground. Neglect air resistance and assume atmospheric pressure is 1 atm. b) If the desired range of the stream is 8 m, with what speed v2 must the stream leave the nozzle? c) At what speed v1 must the plunger be moved to achieve the desired range? d) What is the pressure at teh nozzle? e) Find the pressure needed in the larger tube. 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.)

Explanation / Answer

e

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