In an engine operating in the Otto cycle, the final volume of the fuel-air mixture is one sixth the initial volume. Assume ? = 1.4 . The maximum theoretical efficiency of this cycle, in per cent, is
a. 17.
b. 49.
c. 51.
d. 56.
e. 83.
c
You might also like to view...
If 3 different conservative forces and one non-conservative force act within a system, how many potential energy terms appear in the energy equation that describes the system?
1.0 2.1 3.3 4.4
Tidal forces are important to the Algol system today but were not important when both stars were still on the main sequence. Why not?
A) Main-sequence stars in a system like the Algol system are small compared to their physical separation. B) Main-sequence stars are too big to be affected by tidal forces. C) Main-sequence stars are too massive to be affected by tidal forces. D) Main-sequence stars are unaffected by tidally induced mass transfer.
The warmth you feel from the Sun at the beach is an example of __________
Fill in the blank(s) with correct word
Which of the following statements about the greenhouse effect is true?
A) The burning of fossil fuels increases the greenhouse effect on Earth because of the release of carbon dioxide. B) A weak greenhouse effect operates on Mars. C) Without the naturally occurring greenhouse effect, Earth would be too cold to have liquid oceans. D) One result of an increased greenhouse effect on Earth may be an increased number of severe storms. E) All of the above are true.