A hockey puck sliding across the ice finally comes to rest because
A) it seeks its proper and natural state.
B) of friction.
C) that's just the way it is.
Answer: B
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A long-distance swimmer is able to swim through still water at 4.0 km/h. She wishes to try to swim from Port Angeles, Washington, directly north to Victoria, British Columbia, a distance of 50 km
An ocean current flows through the Strait of Juan de Fuca from west to east at 3.0 km/h. In what direction (relative to north) should she swim to make the crossing along a straight line between the two cities? A) 37° west of north B) 37° east of north C) 41° west of north D) 41° east of north E) 49° west of north
Which of these strongly relate to a saxophone and clarinet?
A) vibrating air B) length of tube. C) both of these D) neither of these
Which star has the highest density (mass per unit volume)?
a. white dwarf b. main sequence c. supergiant d. red giant e. regular giant
Nuclear fusion creates
A) radiant energy. B) thermal energy. C) both thermal and radiant energy. D) nuclear energy. E) all types of energy.