You’re holding a hose at waist height and spraying water horizontally with it. The hose nozzle has a diameter of 1.80 cm, and the water splashes on the ground a distance of 0.970 m horizontally from the nozzle. Suppose you now constrict the nozzle to a diameter of 0.750 cm; how far horizontally from the nozzle will the water travel before hitting the ground? (Ignore air resistance.)

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A: = 910 kg/m3A1 = 1.90 x 10-2 m2A2 = 9.70 x 10-2 m2P1-P2 = 6.30 x 103 Pa

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.