Physics, 24.02.2022 18:30 Jenifermorales101
Why is it impossible for a heat engine to be 100% efficient?
A. Some heat is always lost to the environment.
B. Entropy always decreases in a heat engine.
C. Work cannot be done on a heat engine.
D. Heat is constantly being created.
Answers: 3
Physics, 21.06.2019 16:00
Your pendulum clock which advances 1.0 s for every complete oscillation of the pendulum is running perfectly on earth at a site where the magnitude of the acceleration due to gravity is 9.80 m/s2. you send the clock to a location on the moon where the magnitude of the acceleration due to gravity is 1.65 m/s2.
Answers: 2
Physics, 22.06.2019 03:00
An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d
Answers: 1
Physics, 22.06.2019 08:50
You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?
Answers: 1
Why is it impossible for a heat engine to be 100% efficient?
A. Some heat is always lost to the en...
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