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Chapter 10: Q1P (page 260)
(I) The approximate volume of the granite monolith known as El Capitan in Yosemite National Park (Fig.10鈥�47) is about 108M3. What is its approximate mass?
The mass of the granite monolith is 2.7 脳 1011 Kg.
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(II) If the base of an insect鈥檚 leg has a radius of about \(3.0 \times 1{0^{{\bf{ - }}5}}\;m\) and the insect鈥檚 mass is 0.016 g, would you expect the six-legged insect to remain on top of the water? Why or why not?
(II)What is the lift (in newtons) due to Bernoulli鈥檚 principle on a wing of area\(88\;{{\rm{m}}^2}\)if the air passes over the top and bottom surfaces at speeds of 280 m/s and 150 m/s, respectively?
A beaker of water rests on an electronic balance that reads 975.0 g. A 2.6-cm-diameter solid copper ball attached to a string is submerged in the water, but does not touch the bottom. What are the tension in the string and the new balance reading?
(I) Estimate the pressure exerted on a floor by (a) a one-pointed heel of area = 0.45 cm2, and (b) one wide heel of area 16 cm2, Fig. 10鈥�48. The person wearing the shoes has a mass of 56 kg.
(II) A physician judges the health of a heart by measuring the pressure with which it pumps blood. If the physician mistakenly attaches the pressurized cuff around a standing patient鈥檚 calf (about 1 m below the heart) instead of the arm (Fig. 10鈥�42), what error (in Pa) would be introduced in the heart鈥檚 blood pressure measurement?
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