Question

A large glass window, 50 mm (1.97 in) thick, is placed in the dolphin tank at Sea World. Seawater (Z. = 1.533 x 10° rayl) is on one side of the window and atmospheric air (Z. = 415 rayl) is on the other side. A plane sound wave in the air strikes the window at normal incidence. The frequency of the sound wave is 2 kHz. The resulting sound pressure level transmitted into the seawater is 114.3 dB. Determine [A] the acoustic intensity of the incident wave and [B] the rms acoustic pressure of the incident wave.

Answer 1

The ratio of the wavelength in air to the wavelength in seawater can be calculated using the speed of sound in each medium.

Step-by-step explanation:

The ratio of the wavelength of a sound in air to its wavelength in seawater can be found using the formula:

Ratio = speed of sound in air / speed of sound in seawater

The speed of sound in air can be calculated using the formula:

Speed of sound in air = frequency * wavelength in air

And the speed of sound in seawater can be calculated using the formula:

Speed of sound in seawater = frequency * wavelength in seawater

Using the given information, we can substitute the values and calculate the ratio.