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- -- card: 38901 from stack: in
- -- bmap block id: 0
- -- flags: 0000
- -- background id: 2707
- -- name: #265
- ----- HyperTalk script -----
- on openCard
- global group,rightone
- put 21 into group
- put "B" into rightone
- pass openCard
- end openCard
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-
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- -- part contents for background part 20
- ----- text -----
- Question #21
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- -- part contents for background part 1
- ----- text -----
- 2E-12-4.2 Why do we call signals in the range 20 Hz to 20,000 Hz "audio frequencies"?
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- -- part contents for background part 11
- ----- text -----
- Because the human ear rejects signals in this frequency range
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- -- part contents for background part 27
- ----- text -----
- Because the human ear responds to sounds in this frequency range
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- -- part contents for background part 28
- ----- text -----
- Because frequencies in this range are too low for a radio to detect
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- -- part contents for background part 29
- ----- text -----
- Because a radio converts signals in this range directly to sounds the human ear responds to
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- -- part contents for background part 43
- ----- text -----
- Correct answer is B