(III) In the process of taking a gas from state a to state c along the curved path shown in Fig. 19–32, 85 J of heat leaves the system and 55 J of work is done on the system. ( a ) Determine the change in internal energy. E int, a – E int, c ( b ) When the gas is taken along the path cda, the work done by the gas is W = 38 J. How much heat Q is added to the gas in the process cda? (c) If P a = 2.2 P d , how much work is done by the gas in the process abc? ( d ) What is Q for path abc? ( e ) If E int, a – E int, b = 15 J, what is Q for the process be? Here is a summary of what is given: Q a → c = − 85 J W a → c = − 55 J W cda = 38 J E int,a − E int,b = 15 J P a = 2.2 P d .
(III) In the process of taking a gas from state a to state c along the curved path shown in Fig. 19–32, 85 J of heat leaves the system and 55 J of work is done on the system. ( a ) Determine the change in internal energy. E int, a – E int, c ( b ) When the gas is taken along the path cda, the work done by the gas is W = 38 J. How much heat Q is added to the gas in the process cda? (c) If P a = 2.2 P d , how much work is done by the gas in the process abc? ( d ) What is Q for path abc? ( e ) If E int, a – E int, b = 15 J, what is Q for the process be? Here is a summary of what is given: Q a → c = − 85 J W a → c = − 55 J W cda = 38 J E int,a − E int,b = 15 J P a = 2.2 P d .
(III) In the process of taking a gas from state a to state c along the curved path shown in Fig. 19–32, 85 J of heat leaves the system and 55 J of work is done on the system. (a) Determine the change in internal energy. Eint, a – Eint, c (b) When the gas is taken along the path cda, the work done by the gas is W = 38 J. How much heat Q is added to the gas in the process cda? (c) If Pa = 2.2Pd, how much work is done by the gas in the process abc? (d) What is Q for path abc? (e) If Eint, a – Eint, b = 15 J, what is Q for the process be? Here is a summary of what is given:
Q
a
→
c
=
−
85
J
W
a
→
c
=
−
55
J
W
cda
=
38
J
E
int,a
−
E
int,b
=
15
J
P
a
=
2.2
P
d
.
(II) Sketch a PV diagram of the following process: 2.5 L ofideal gas at atmospheric pressure is cooled at constantpressure to a volume of 1.0 L, and then expanded isothermally back to 2.5 L, whereupon the pressure is increased atconstant volume until the original pressure is reached
(II) A Carnot engine’s operating temperatures are 210°Cand 45°C. The engine’s power output is 910 W. Calculatethe rate of heat output.
(III) The PV diagram in Fig. 15–23 shows two possible states
of a system containing 1.75 moles of a monatomic ideal
gas. (P = P, = 425 N/m², Vị = 2.00 m³, V, = 8.00 m².)
(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, , followed
by an isovolumetric increase in temperature to state 2, and
label this process B.
(d) Find the change (N/m2)
in internal energy 500
of the gas for the
two-step process B.
+
!
400
2
300
200
100
FIGURE 15-23
+
+
0 2
+
+
8
10 V (m³)
Problem 12.
4
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
The Second Law of Thermodynamics: Heat Flow, Entropy, and Microstates; Author: Professor Dave Explains;https://www.youtube.com/watch?v=MrwW4w2nAMc;License: Standard YouTube License, CC-BY