select the correct answer. which statement is true for a sound wave entering an area of warmer air? a. the…

select the correct answer. which statement is true for a sound wave entering an area of warmer air? a. the wave travels faster and with the same wavelength. b. the wave travels at the same speed but with an increased wavelength. c. the wave travels at the same speed and with the same wavelength. d. the wave travels slower and with an increased wavelength. e. the wave travels faster and with an increased wavelength.

select the correct answer. which statement is true for a sound wave entering an area of warmer air? a. the wave travels faster and with the same wavelength. b. the wave travels at the same speed but with an increased wavelength. c. the wave travels at the same speed and with the same wavelength. d. the wave travels slower and with an increased wavelength. e. the wave travels faster and with an increased wavelength.

Answer

Brief Explanations:

The speed of sound in air is directly proportional to the square - root of the absolute temperature. When sound enters warmer air, the temperature increases, so the speed of the sound wave increases. The frequency of a sound wave remains constant when it moves from one medium to another. Since the speed formula is $v = f\lambda$ (where $v$ is speed, $f$ is frequency and $\lambda$ is wavelength), and $f$ is constant while $v$ increases, the wavelength $\lambda$ must increase.

Answer:

E. The wave travels faster and with an increased wavelength.