If you do 10 J of work to push 1 coulomb of charge into an electric field, its voltage with respect to its starting position is
A) less than 10 V.
B) 10 V.
C) more than 10 V.
D) none of the above
Answer: B
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Why does Jupiter have several distinct cloud layers?
A) The higher clouds are made of gaseous hydrogen and the lower clouds of liquid hydrogen. B) Different gases can condense at different altitudes in Jupiter's atmosphere. C) The atmospheric composition differs at different altitudes in Jupiter's atmosphere. D) The different cloud layers are a result of differing wind speeds.
Suppose we discover a new comet on an orbit that brings it closer to the Sun than Mercury every 125 years. What can we conclude?
A) It has a coma and tail during most of each orbit. B) It came from the Kuiper belt. C) It has been on its current orbit for only a very short time compared to the age of our solar system. D) It came from the Oort cloud.
Distinguish between heat and temperature. Compare definitions and units of measurements
Good tracers of the spiral arms of our galaxy are all I. very old. II. very young. III. very luminous. IV. moving with large radial velocities
a. I & III b. I & IV c. II & III d. II & IV e. I, III, & IV