The speed of light is:
A) 3 ´ 108 meters per second.
B) 3 ´ 108 miles per second.
C) 186,000 miles per second.
D) a and c.
Correct Answer:
Verified
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A) type of dark
Q4: X-rays have which of the following properties?
A)
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A) October 8, 1985
B)
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