Question 4

Our ears can hear sound frequencies up to about 20,000 Hz. What is the wavelength in air at 20^oC of sound waves of this frequency?

• A.    6.86*10⁶ m
• B.    1.72*10^-2 m
• C.    5.83*10¹ m
• D.    10.8*10^-2 m
• E.    Not close to any of the above

Formula Sheet

Question 3

Question 5

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