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posted by  machuelito on 5/15/2008 10:00:22 PM  |  status: Live  

Chapter 10: Fluids

Course Textbook Chapter Problem
Algebra Based Physics Physics: Principles with Applications (5th) by Giancoli 10 N/A
Question Details:
The figure shows a nozzle on a hose carrying water. If the pressure at Point 1 is 217 × 103 Pa, the velocity 0.53 m/s, and the diameter 10 cm, given that the diameter at point 2 is 2.5 cm what is the velocity to the nearest tenth of a m/s at point 2? What is the pressure to the nearest kPa at point 2?
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posted by richmondMike on 5/15/2008 10:42:43 PM  |  status: Live
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Response Details:
Given r1 = 0.05m, and r2 = 0.0125m. Given v1 = 0.53m/s.
From the continuity equation , we get , and .
The Bernoulli's equation states = constant. Since the height of the two points is the same, we get , where p1 = 217 x 103Pa, and ρ = 1000kg/m3.
Solve for .
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