Which (pressure vs.time) waveform represents a high pitched soft sound?
A) 
B) 
C) 
D) 
Correct Answer:
Verified
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A)tornado
B)cyclone
C)hurricane
D)heat pump
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A)to
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Q33: The purpose of the device shown is
A)to
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Q38: Radio waves and microwave radiation typify which
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A)packed
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