According to the special theory of relativity, while traveling at very high speed your pulse rate
A) increases.
B) decreases.
C) remains unchanged.
Answer: C
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A lens must be ________ in shape to focus the transmitted light
Fill in the blank(s) with correct word
The term age of mammals is sometimes used to refer to the ______________ era
Fill in the blank(s) with correct word
The wave-related quantity algebraically equivalent to 1/f is
a. ? b. T c. A d. ?
Suppose Earth's axis had a greater tilt (more than 23.5 degrees). Which of the following statements would not be true?
A) The celestial sphere would be covered by a different set of constellations than it is with the current axis tilt. B) Seasonal temperature variations would be more extreme than they are with the current tilt. C) We would have more daylight in summer and less daylight in winter than we do with the current tilt. D) The Arctic and Antarctic circles would be located closer to the equator than they are now.