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Chapter 19: Q. 2 (page 543)
How much work is done on the gas in the process shown in Figure EX19.2?
The amount of work done energy is 60J
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A container holds 1.0 g of oxygen at a pressure of 8.0 atm.
a. How much heat is required to increase the temperature by 100掳C at constant pressure?
b. How much will the temperature increase if this amount of heat energy is transferred to the gas at constant volume?
A scientist whose scale is broken but who has a working
2.5 kW heating coil and a thermometer decides to improvise
to determine the mass of a block of aluminum she has recently
acquired. She heats the aluminum for 30 s and finds that its
temperature increases from 20 C to 35 C. What is the mass of the
aluminum?
A cylindrical copper rod and an iron rod with exactly the same dimensions are welded together end to end. The outside end of the copper rod is held at , and the outside end of the iron rod is held at . What is the temperature at the midpoint where the rods are joined together?
What maximum power can be radiated by a 10-cm-diameter solid lead sphere? Assume an emissivity of 1.
of nitrogen gas at STP are pressurized in an isochoric process to a pressure of . What are (a) the final temperature, (b) the work done on the gas, (c) the heat transfer to the gas, and (d) the pressure ratio ? (e) Show the process on a diagram, using proper scales on both axes.
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