-- card: 93332 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 2707
-- name: #269
----- HyperTalk script -----
on openCard
  global group,rightone
  put 21 into group
  put "D" into rightone
  pass openCard
end openCard



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Question #21

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2E-13.2 In the time it takes a certain radio signal to pass your antenna, the leading edge of the wave travels 12 meters.  What property of the signal does this number refer to?

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The signal frequency

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The wave velocity

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The velocity factor

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The signal wavelength

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Correct answer is D