A grandfather clock that is regulated by a pendulum is orbiting the Earth aboard the space station. Compared to an identical clock on Earth, the grandfather clock aboard the space station will
A. run fast.
B. not run at all.
C. run slow.
D. keep time at the same rate.
Answer: B
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A.
B. 
C. 
D. 
E. 
A stationary 1.67-kg object is struck by a stick. The object experiences a horizontal force given by F = at - bt2, where t is the time in milliseconds from the instant the stick first contacts the object
If a = 1500 N/(ms) and b = 20 N/(ms)2, what is the speed of the object just after it comes away from the stick at t = 2.74 ms? A) 3.3 m/s B) 22 m/s C) 3.7 m/s D) 25 m/s
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Does a radioactive isotope ever lose its radioactivity?
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