A heavy ball hangs by a string, with a second string attached to its bottom (Figure 1.7 in your text). A quick pull on the bottom string breaks the
A) top string.
B) bottom string.
C) top or bottom string equally likely.
D) none of the above
Answer: B
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What will be an ideal response?
A young blue star moving along a circular orbit in the disk is a
A. Pop I star. B. Pop II star. C. Pop III star. D. Pop V star.
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A 1.0 mi B 1.4 mi C 1.6 mi D 2.0 Mi
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