A mass suspended from a spring bobs up and down one complete cycle every 2 s. Its period is
A) 0.5 s.
B) 1 s.
C) 2 s.
D) none of the above
Answer: C
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Acceleration: If the velocity of an object is zero at one instant, what is true about the acceleration of that object? (There could be more than one correct choice.)
A. The acceleration could be positive. B. The acceleration could be negative. C. The acceleration could be zero. D. The acceleration must be zero.
The order of evolutionary stages of a star like the Sun would be Main Sequence, giant, planetary nebula, and finally a(n) ________
Fill in the blank(s) with correct word
When you turn on a lamp, the initial current in its filament is greater at first, rather than a moment later, which indicates
A) something is faulty. B) a time delay for current attaining its average speed. C) increased temperature means increased resistance. D) nothing of interest
A container is filled with water and the pressure at the container bottom is P. If the container is instead filled with oil having specific gravity 0.80, what new bottom pressure results?
a. a pressure < P b. the same pressure P c. a pressure > P d. This is unable to be determined with the information given.