Question

A pressure wave traveling through air is described by the function ??(??,??)= (1.0 atm)sin[(6.0 radm ⁄)??−(4.0 rads ⁄)??]. What is the speed of the wave? (6 pts) (b) When sound travels through the ocean, where the bulk modulus is 2.34×109 N/m2, the wavelength associated with 1000 Hz waves is 1.51 m. Calculate the density of seawater. (6 pts) (c) A jogger hears a car (at rest) alarm and decides to investigate. While running toward the car, she hears an alarm frequency of 869.5 Hz. After passing the car, she hears the alarm at a frequency 854.5 Hz. If the speed of sound is 343 m/s, calculate the speed of the jogger.

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