When Rutherford directed a stream of alpha particles at a gold foil, most particles
A) bounced back.
B) continued through.
C) stopped.
D) spiraled.
Answer: B
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A certain battery charger uses 12 W of power. At 6.0 cents per kilowatt-hour, how much does it cost to charge batteries for a full day?
A) 28¢ B) 1.4¢ C) 75¢ D) 1.7¢ E) 2.3¢
How do the stellar winds of young Sun-like stars compare to the solar wind we see from the Sun today?
a. Young stars don’t have winds. b. Young stars have weaker winds. c. Young stars have much stronger winds.
If the same quantity of heat is added to both a 1-liter and a 2-liter container of water, the temperature change in the 1-liter container will be
A) less. B) the same. C) greater.
For a displacement standing wave in an air column in a pipe that is open at both ends, there must be at least:
a. one node and one antinode. c. two antinodes and one node. b. two nodes and one antinode. d. two nodes and two antinodes.