Water flows through a 4.70 cm diameter hose at 1.35×10−4 m3/s . Part A What's the...

Question

Question

Water flows through a 4.70 cm diameter hose at 1.35×10⁻⁴ m3/s .

Part A

What's the flow speed?

Express your answer with the appropriate units.

science physics

Answer 1

Answer #1

flow rate = speed * Area

speed = flow rate / Area

area = pi*r^2

r = 4.70/2 cm = 2.35 cm = 2.35 x 10^-2 m

Area = pi * (2.35 x 10^-2)^2

speed = 1.35 x 10^- 4 / pi * (2.35 x 10^-2)^2

speed = 0.07785 m/s = 0.078 m/s

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Answer 2

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