The volume of an ideal gas changes from 0.40 to 0.51 m3 although its pressure remains constant at 52 000 Pa. What work is done on the system by its environment?
a. 5.7E+3 J
b. –5.7E+3 J
c. –2.1E+4 J
d. 2.1E+4 J
e. –2.7E+4 J
b
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Which of these events is NOT possible?
A) low-mass stars swelling up to produce planetary nebulae B) red giants exploding as Type II supernovae C) close binary stars producing recurrent novae explosions D) white dwarfs and companion stars producing recurrent Type I supernova events E) a white dwarf being found in the center of a planetary nebula
What forms in nucleosynthesis?
A.) Most of the Helium-4 in the Universe. B.) Most of the Hydrogen-1 in the Universe. C.) Stars. D.) The cosmic microwave background radiation. E.) Quarks
The orientation of an image seen projected on a screen by a single lens is always __________
Fill in the blank(s) with correct word
Acrobat Bart at the circus drops vertically onto the end of a see-saw, with his partner Art equidistant from the fulcrum at the other end. Art is propelled straight upward a distance twice that of Bart's dropping distance. Neglecting inefficiencies we see
A) the masses of Art and Bart are equal. B) Art has half the mass of Bart. C) need more information