Chapter 14: Q.13 (page 384)
What is the height of a water barometer at atmospheric
pressure?
The height is 10.34 m
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The two --diameter cylinders in FIGURE , closed at one end, open at the other, are joined to form a single cylinder, then the air inside is removed.
A. How much force does the atmosphere exert on the flat end of each cylinder?
B. Suppose one cylinder is bolted to a sturdy ceiling. How many football players would need to hang from the lower cylinder to pull the two cylinders apart?
The -tall cylinder in FIGURE P14.61 contains air at a pressure of . A very thin, frictionless piston of negligible mass is placed at the top of the cylinder, to prevent any air from escaping, then mercury is slowly poured into the cylinder until no more can be added without the cylinder overflowing. What is the height h of the column of compressed air?
Hint: Boyle's law, which you learned in chemistry, says for a gas compressed at constant temperature, which we will assume to be the case.
The container shown in FIGURE EX14.12 is filled with oil. It is open to the atmosphere on
the left.
a. What is the pressure at point A?
b. What is the pressure difference between points A and B? Between points A and C?
Glycerin is poured into an open U-shaped tube until the height in both sides is . Ethyl alcohol is then poured into one arm until the height of the alcohol column is . The two liquids do not mix. What is the difference in height between the top surface of the glycerin and the top surface of the alcohol?
In , a cone of density and total height localid="1648200296554" floats in a liquid of density . The height of the cone above the liquid is . What is the ratio of the exposed height to the total height?
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