24. (II) A geologist finds that a Moon rock whose mass is 9.28 kg has an apparent mass of 6.18 kg when submerged in water. What is the density of the rock?

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Number 24
Small cylinder
10.0 cm
Hydraulic
fluid
-2.0 cm
FIGURE 10-51 Problem 21.
22. (II) An open-tube mercury manometer is used to measure
the pressure in an oxygen tank. When the atmospheric
pressure is 1040 mbar, what is the absolute pressure (in Pa)
in the tank if the height of the mercury in the open tube is
(a) 18.5 cm higher, (b) 5.6 cm lower, than the mercury in
the tube connected to the tank? See Fig. 10–7a.
10-7 Buoyancy and Archimedes' Principle
23. (II) What fraction of a piece of iron will be submerged when
it floats in mercury?
24. (II) A geologist finds that a Moon rock whose mass is 9.28 kg
has an apparent mass of 6.18 kg when submerged in water.
What is the density of the rock?
25. (II) A crane lifts the 18,000-kg steel hull of a sunken ship
out of the water. Determine (a) the tension in the crane's
cable when the hull is fully submerged in the water, and
(b) the tension when the hull is completely out of the water.
26. (II) A spherical balloon has a radius of 7.15 m and is filled
with helium. How large a cargo can it lift, assuming that the
skin and structure of the balloon have a mass of 930 kg?
Neglect the buoyant force on the cargo volume itself.
27. (II) What is the likely identi
if a sample has a mass of
an apparent mass of 5
a metal (see Table 10-1)
in air and
en m
ter?
Transcribed Image Text:Small cylinder 10.0 cm Hydraulic fluid -2.0 cm FIGURE 10-51 Problem 21. 22. (II) An open-tube mercury manometer is used to measure the pressure in an oxygen tank. When the atmospheric pressure is 1040 mbar, what is the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is (a) 18.5 cm higher, (b) 5.6 cm lower, than the mercury in the tube connected to the tank? See Fig. 10–7a. 10-7 Buoyancy and Archimedes' Principle 23. (II) What fraction of a piece of iron will be submerged when it floats in mercury? 24. (II) A geologist finds that a Moon rock whose mass is 9.28 kg has an apparent mass of 6.18 kg when submerged in water. What is the density of the rock? 25. (II) A crane lifts the 18,000-kg steel hull of a sunken ship out of the water. Determine (a) the tension in the crane's cable when the hull is fully submerged in the water, and (b) the tension when the hull is completely out of the water. 26. (II) A spherical balloon has a radius of 7.15 m and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 930 kg? Neglect the buoyant force on the cargo volume itself. 27. (II) What is the likely identi if a sample has a mass of an apparent mass of 5 a metal (see Table 10-1) in air and en m ter?
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