n airplane traveling at 130 m/s emits a sound of frequency 9.25 kHz. What frequency does a stationary listener hear the sound A) As the plane approaches? B) As the plane passes?

A В a) An ambulance moving with a speed of Vs m/s, produces a siren of frequency 528HZ, approaches an observer B, who is moving in the opposite direction with a speed of 26.15 m/s. If the frequency heard by the observer B is 664 Hz, and the speed of the sound is 332 m/s, calculate the Speed of the ambulance Vs, in m/s b) If now, the observer A is receding from the ambulance with the same speed as the observer B, calculate the Frequency of the sound heard by the observer A, in hertz :

The frequency of E, on the piano is 329.6 Hz. (a) What is the wavelength (in m) of sound with this frequency as it travels in water at room temperature? (b) What is the wavelength (in m) of sound with this frequency in helium at room temperature? m

A sound wave is travelling in air has a wavelength of 0.54 m, What is the frequency of the wave in Hz, if the temperature of the air is 45° C

A source of sound, when stationary, generates wave of frequency 500Hz. The speed of sound is 340m/s. Find the wavelength of the waves detected by an observer and frequency observed when a) The source is stationary and the observer moves towards it with speed 20m/s. b) The source moves away from the stationary observer with speed 30m/s.

A water wave has a frequency of 9.0 Hz and a wavelenght of 5.0m. (a)  What is the period (in seconds) of these waves? (b) What is the wave velocity in m/s?

The higher frequency limit for human hearing is 23.9  kHz. If the air temperature is 12.2 °C, the corresponding wavelength (mm; millimeter) of the sound is:

A projectile is approaching you at 50 m/s and whistling with a frequency of 300 Hz if heard by an observer on the projectile. You are running away from the projectile at 10 m/s. You hear a frequency O higher than 300 Hz. which is that of your scream. varying about 300 Hz. lower than 300 Hz. 300 Hz.

What is the speed of sound in (m/s) in a medium where a 156 KHZ frequency produces a 3.282 cm wavelength?

A cyclist is using a loudspeaker to measure her speed. She cycles directly towards the loudspeaker which emits a sound with a constant frequency 261 Hz. The cyclist measures the frequency to be 269 Hz. You should assume that the speed of sound in air is 335 m s-¹. (a) Calculate the speed of the cyclist. (b) Describe briefly what the cyclist will hear as she passes the loudspeaker.