(II) The PV diagram in Fig. 19–31 shows two possible states of a system containing 1.55 moles of a monatomic ideal gas. ( P 1 = P 2 = 455 N / m 2 , V 1 = 2.00 m 3 , V 2 = 8.00 m 3 ) . ( a ) Draw the process which depicts an isobaric expansion from state 1 to state 2, and label this process A. ( b ) Find the work done by the gas and the change in internal energy of the gas in process A. ( c ) Draw the two-step process which depicts an isothermal expansion from state 1 to the volume V 2 , followed by an isovolumetric increase in temperature to state 2, and label this process B. ( d ) Find the change in internal energy of the gas for the two-step process B. Figure 19–31 Problem 32
(II) The PV diagram in Fig. 19–31 shows two possible states of a system containing 1.55 moles of a monatomic ideal gas. ( P 1 = P 2 = 455 N / m 2 , V 1 = 2.00 m 3 , V 2 = 8.00 m 3 ) . ( a ) Draw the process which depicts an isobaric expansion from state 1 to state 2, and label this process A. ( b ) Find the work done by the gas and the change in internal energy of the gas in process A. ( c ) Draw the two-step process which depicts an isothermal expansion from state 1 to the volume V 2 , followed by an isovolumetric increase in temperature to state 2, and label this process B. ( d ) Find the change in internal energy of the gas for the two-step process B. Figure 19–31 Problem 32
(II) The PV diagram in Fig. 19–31 shows two possible states of a system containing 1.55 moles of a monatomic ideal gas.
(
P
1
=
P
2
=
455
N
/
m
2
,
V
1
=
2.00
m
3
,
V
2
=
8.00
m
3
)
. (a) Draw the process which depicts an isobaric expansion from state 1 to state 2, and label this process A. (b) Find the work done by the gas and the change in internal energy of the gas in process A. (c) Draw the two-step process which depicts an isothermal expansion from state 1 to the volume V2, followed by an isovolumetric increase in temperature to state 2, and label this process B. (d) Find the change in internal energy of the gas for the two-step process B.
(15-56) An inventor claims to have built an engine that produces 2.00 MW of usable work while taking in 3.00 MW of thermal energy at 425 K, and rejecting 1.00 MW of thermal energt at 15 K. Is there anything fishy about his claim?
The engine of a Mercedes-Benz automobile has an intake air of 20C and compresses it adiabatically up to 10% of its initial volume. Considering the air is an ideal gas, find its final temperature at the end of the compression.
One mole of an ideal gas is heated slowly so that it triples its volume and pressure, in such a way that the pressure of the gas is directly proportional to its volume (linear relationship).
Whats the work consumed by the gas?
Chapter 19 Solutions
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