2-The leaves of a tree lose water to the atmosphere via the process of transpira

Question

2-The leaves of a tree lose water to the atmosphere via the process of transpiration. Transpiration Plants continually A particular tree loses water at the rate of 4 x 10 m/s; this water is replenished by the upward flow of sap through vessels in the trunk. This tree's trunk contains about 3000 vessels, each 752m in diameter. What is the speed of the sap flowing in the vessels? lose water to the air. ·This is called 3. Water flows at 10 L/s through a horizontal pipe that narrows smoothly from 15 cm diameter to 10 cm diameter. A pressure gauge in the the reading of a pressure gauge in the wide section? blIl 1) End F5 F6 F7 F8 4 5 06 17V 8 A9 90

Explanation / Answer

Q = 4*10-8 m3/s

Area of each vessel = pi*d2/4 = pi*(75.2*10-6)2/4

Thus, total area is:

A = 3000 * pi*(75.2*10-6)2/4

Speed = Q/A

= (4*10-8)/ (pi*(75.2*10-6)2/4)

= 3 x 10-3 m/s

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