Peoples Physics Concepts

http://www.ck12.org Chapter 18. Thermodynamics and Heat Engines

890 kW−240 kW=650 kW

e) For this part of the problem, we need to convert the power being put into the engine into the amount of fuel being
used(kW or kJ/s⇒kg/hr).

890 kW∗

1 kg

2. 7 ∗ 106 J

∗3600 s/hr=1186 kg/hr

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1. Below is a graph of the pressure and volume of a gas in a container that has an adjustable volume. The lid of
   the container can be raised or lowered, and various manipulations of the container change the properties of the
   gas within. The points
   2.a,b,


2. and
   4.c


3. represent different stages of the gas as the container undergoes changes (for instance, the lid is raised or
   lowered, heat is added or taken away, etc.) The arrows represent the flow of time. Use the graph to answer the
   first three questions.

6.

7. Consider the change the gas undergoes as it transitions from pointbto pointc. What type of process is this?
   a. adiabatic
   b. isothermal
   c. isobaric