In a student laboratory exercise, the wavelength of a 68,300 Hz ultrasound wave is measured to be 0.512 cm. Find the air temperature (in K).

Answer 1

Speed of wave = frequency* Wave length

= 68300*0.00512 m/s

= 349.69 m/s

using

V1/v2 = sqrt (T1/T2)

V1= 332m/s at T1=273K

plug in v2 = 349.69

Find T2

T2 comes 302.86 K

please check calculations once again