diameter= 3cm 29. In the pipe shown above, which carries water, the flow speed a

Question

diameter= 3cm 29. In the pipe shown above, which carries water, the flow speed at point X In tho pipe shown above, which caries water, intsWht is the fow sped at point Y? A. 2/3 m/s B. 2 m/s C. 4 m/s D. 18 m/s E. 54 m/s direction et luid flow Section 3 Section 1 A section of glass tubing has three different cross sectional areas, A1, A2, and A3 (See figure above), Narrow vertical columns are inserted into the tube at each of the tree different sections to measure the hydrostatic pressure. 30. Which of the following correctly relates the pressure readings obtained from each pressure gauge in terms of the locations which the gauges are situated? C. PI-PI P D. P> P> Ps 31. If in Section 2 the cross-sectional area is 8 cm2 and fluid is flowing through there at a velocity of 10 A. 4 cm/s B. 8 cm/s C. 10 cm/s D. 16 cm/s m/s, and 32. If in Section 1 the pipe diameter is 6 cm and fluid is flowing through there at a velocity of 0.40 if in Section 2 the pipe diameter is 4 m what is the fluid velocity in Section 27 A. 0.60 m/s B. 0.90 m/s C. 1.0 m/s D. 1.2 m/s 33. If the fluid velocity in Section 1 is 0.4 m/s and in Section 3 it is 0.6 m/s, what is the pressure difference between Sections 1 and 37(Assume the fluid is water) A. 50 Pa B. 100 Pa C. 200 Pa D. 260 Pa

Explanation / Answer

29.

dx = diameter at X = 3 cm

dy = diameter at Y = 9 cm

vx = speed at X = 6 m/s

vy = speed at Y = ?

using equation of continuity

(0.25) pi vx d2x = (0.25) pi vy d2y

(6) (3)2 = vy (9)2

vy = 2/3 m/s

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