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Chapter 10: Q8P (page 260)
(I) Estimate the pressure needed to raise a column of water to the same height as a 46-m-tall pine tree.
The pressure needed to raise the water column to a height of 46m is 4.50 脳 105N/m2.
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(I) If the force \(F\) needed to move the wire in Fig. 10鈥�34 is \(3.4 \times {10^{ - 3}}\;{\rm{N}}\), calculate the surface tension \(\gamma \) of the enclosed fluid. Assume \(l = 0.070\;m\).
Why don鈥檛 ships made of the iron sink?
Intravenous transfusions are often made under gravity, as shown in Fig. 10鈥�55. Assuming the fluid has a density of \({\bf{1}}{\bf{.00\;g/c}}{{\bf{m}}^{\bf{3}}}\)at what height h should the bottle be placed so the liquid pressure is (a) 52 mm-Hg, and (b) \({\bf{680\;mm - }}{{\bf{H}}_{\bf{2}}}{\bf{O?}}\)(c) If the blood pressure is 75 mm-Hg above atmospheric pressure, how high should the bottle be placed so that the fluid just barely enters the vein?
Beaker A is filled to the brim with water. Beaker B is the same size and contains a small block of wood that floats when the beaker is filled with water to the brim. Which beaker weighs more?
(a) Beaker A.
(b) Beaker B.
(c) The same for both
(II) The maximum gauge pressure in a hydraulic lift is 17.0 atm. What is the largest-size vehicle (kg) it can lift if the diameter of the output line is 25.5 cm?
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