The relativistic kinetic energy formula is valid
A) only for speeds near the speed of light.
B) at all speeds.
C) only for subatomic particles, such as electrons and protons.
B
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A telescope that suffers from chromatic aberration and has a low light-gathering power is most likely
a. a small-diameter reflecting telescope. b. a small-diameter refracting telescope. c. a large-diameter refracting telescope. d. a large-diameter reflecting telescope. e. an infrared telescope.
Significant Figures: What is the result, expressed to the proper number of significant figures, of adding 23.4 to 91.237 and then subtracting 23.4?
A. 91.237 B. 91.2 C. 91.3 D. 91.0 E. 91
An electroscope is charged by induction using a glass rod that has been made positive by rubbing it with silk. The electroscope leaves:
A) gain electrons B) gain protons C) lose electrons D) lose protons E) gain an equal number of protons and electrons
If the Andromeda Galaxy collided with the Milky Way, what would most likely happen to Earth?
A) The Sun and all its planets would be crushed by collisions with stars and planets from the Andromeda Galaxy. B) Nothing. C) The Sun would not be disturbed, but the solar system would be ripped apart. D) The Sun will turn into a red giant and explode.