What frequency of sound traveling in air at 37◦ C has a wavelength of 0.43 m?

1.  A sound wave propagating in air has a frequency of 220 Hz. What is its wavelength? (The speed of sound in air is 343 m/s.) 0.641 m 4.55 mm 220 m 343 m 1.56 m

In the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold tempera-tures. What is the speed of sound (in metric units) for a temperature of -55 ◦ C? Calculate to one decimal.

The loudness, L, of a sound (measured in decibels, dB) is inversely proportional to the square of the distance, dd, from the source of the sound.A person 14 feet from a jetski, it is 75 decibels loud.How loud is the jetski when the person is 46 feet away? Round your answer to the nearest hundredth.

Calculate the speed of sound in air when the temperature is 16°C. m/s v = 332 m/s + |0.59 t °C

The speed of sound in a solid medium is 15 times greater than that in air. If the frequency of a wave in the solid is 25 kHz, then what is the wavelength? (The speed of sound in air is 344 m/s.)

4. A bystander hears a siren vary in frequency from 592 Hz to 380 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.) m/s @ 2 W S X command # 3 E D C $ 4 R F G Search or type URL % 5 V.. T G MacBook Pro 6 B Y H & 7 N U 00+ J 8 - M 1332 j ( 9 0 K .C O L command P V - *** : 2 t { option [ ? 12

3. A bystander hears a siren vary in frequency from 598 Hz to 364 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.) m/s f60 ss f60 s ssfo ssf60 s

A source emits sound waves isotropically. The intensity of the waves 1.80 m from the source is 2.30 x 10-4 W/m². Assuming that the energy of the waves is conserved, find the power of the source. Number i Units

The n vs. f graph below is for a newly discovered material. Please note that the metric prefix "T" represents "tera-", 1 THz = 10¹ Hz. n vs. f GRAPH n 201 1.9 1.8 1.7 1.6 500 600 700 f (THz) 800 In this material, which frequency has the greatest speed? 800 THE In this material, which frequency has the lowest speed?