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Chapter 18: Q. 44 (page 512)
A 15C, 2.0-cm-diameter aluminum bar just barely slips between two rigid steel walls 10.0 cm apart. If the bar is warmed to 25C, how much force does it exert on each wall?
The accurate answer is
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The temperature increases from 300 K to 1200 K as a gas undergoes
the process shown in FIGURE Q18.11. What is the final
pressure?
A gas at fills volume . If the pressure is held constant, what is the volume if
(a) the Celsius temperature is doubled and
(b) the Kelvin temperature is doubled?
What volume of aluminum has the same number of atoms as 10 cm3 of mercury?
A demented scientist creates a new temperature scale, the 鈥淶 scale.鈥� He decides to call the boiling point of nitrogen 0掳Z and the melting point of iron 1000掳Z.
a. What is the boiling point of water on the Z scale?
b. Convert 500掳Z to degrees Celsius and to kelvins.
A student is asked to sketch a pV diagram for a gas that goes
through a cycle consisting of (a) an isobaric expansion, (b) a
constant-volume reduction in temperature, and (c) an isothermal
process that returns the gas to its initial state. The student draws
the diagram shown in FIGURE Q18.12. What, if anything, is wrong
with the student鈥檚 diagram?
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