When heat is added to a closed system, it goes into
a. work only.
b. entropy only.
c. internal energy only.
d. either (A) or (C) or both.
d
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Heat Engines: A heat engine absorbs 85.6 kJ of heat each cycle and exhausts 61.8 kJ.(a) What is the efficiency of the engine?(b) How much work does it do each cycle?
What will be an ideal response?
Which of the following statements is true?
A. A submerged submarine will displace its own weight of water B. A floating ocean liner will displace its own volume of water C. A floating ocean liner will displace its own weight of water D. None of these statements are true
Describe the conditions of Earth during the Precambrian
What will be an ideal response?
All magnetic forces are produced by
A) charges in motion. B) stationary charges. C) electromagnetic generators. D) permanent magnets. E) protons.