Of the billions of possible combinations of atoms into organic molecules, only about 1500 actually occur
Indicate whether the statement is true or false
TRUE
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A thermodynamic engine with an efficiency of 30% performs 2500 J of work. How much thermal energy is discharged to the lower temperature reservoir?
A) 5800 J B) 8300 J C) 750 J D) 1400 J E) 7100 J
______________are materials that are made out of polymers plus additives.
Fill in the blank(s) with the appropriate word(s).
Can an asteroid also be a dwarf planet?
A) No; dwarf planets have different compositions from asteroids. B) No; asteroids are too big to be considered "dwarfs." C) Yes, if the asteroid is large enough for its gravity to have made it round. D) Yes, all asteroids are considered to be dwarf planets.
Ptolemy's model of the universe
a. was heliocentric. b. included elliptical orbits. c. contained epicycles. d. all of the above e. none of the above