Question 3

If the sounds from the following sources were displayed on an oscilloscope, which ones would appear as essentially aperiodic waves?

a. a steamboat whistle
b. the rustling of leaves
c. a person whistling in a monotone
d. a busy street corner
e. a room full of people talking

• A.    a only
• B.    b only
• C.    c only
• D.    d only
• E.    e only
• F.    a and b
• G.    a and c
• H.    c and e
• I.    b and d
• J.    b,d and e
• K.    a,b and d
• L.    Some other combination

Formula Sheet

Question 2

Question 4

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