Water flows at the rate of 2.99 kg/s through a hose with a diameter of 3.70 cm.

Question

Water flows at the rate of 2.99 kg/s through a hose with a diameter of 3.70 cm. (a) What is the speed of water in this hose? Incorrect: Your answer is incorrect. Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m/s (b) If the hose is attached to a nozzle with a diameter of 0.750 cm, what is the speed of water in the nozzle? m/s (c) Is the number of kilograms per second flowing through the nozzle greater than, less than, or equal to 2.99 kg/s? Explain.

Explanation / Answer

a) Hose area = (1.85^2 x pi) = 10.756cm^2.
2.99kg = 2.99 litres, = 2,990cc.
2990/10.756 = 277.98cm, = 2.7798 m'sec.
b) Area of nozzle = (.375^2 x pi) = .442 cm^2.
10.756/.442 = 24.3348:1.
24.3348 x 2.7798 = 67.64m/sec.

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