If y = 0.02 sin (30x? 400t) (SI units), the wave number is
A. 30 rad/m.
B. 30/2? rad/m.
C. 400/2? rad/m.
D. 400 rad/m.
E. 60? rad/m.
Answer: A
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Which of the following statements about a globular cluster is true?
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Any change in the base sequence of an organism's DNA is referred to as a
A) malformation B) transmutation C) distortion D) mutation
Which of the following scientists is generally designated "the father of geology"?
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