__Problem 1:__
At what frequency does the wavelength of sound equal the diameter of the following?

Use 345m/s for the speed of sound in air.

(1 in. = 0.0254 m)

a) A 7.21-ft truck tire.

b) A 6.24-in human head.

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Numerical answers are computed to 3 significant digits;

you are required to get within 0.2% of the solution for your answer to be considered correct.