BackA 15-cm-long aluminum tank is filled with ethyl alcohol. A high-frequency ultrasound wave travels horizontally through one wall of the tank and then through the alcohol. There are 275 times more cycles of the wave in the alcohol than in the aluminum wall. How thick is the wall of the tank?
A metal bar has a length of 1.5 m and a density of 6400 kg/m3. Sound waves take 3.9 × 10-4 s to travel along the length of the bar. What is Young's modulus for this metal?
(II) Determine the wavelength of a 6200-Hz longitudinal wave traveling along an iron rod. Use Tables 12–1 and 13–1.
A metal bar with a length of 1.50 m has density 6400 kg/m3. Longitudinal sound waves take 3.90 × 10-4 s to travel from one end of the bar to the other. What is Young's modulus for this metal?
What must be the stress (F/A) in a stretched wire of a material whose Young's modulus is Y for the speed of longitudinal waves to equal 30 times the speed of transverse waves?