An opera singer in a convertible sings a note at 700 Hz while cruising down the highway at 80 km/h. The speed of sound in the air is 343 m/s. Part A What is the frequency heard by a person standing beside the road in front of the car? Part B What is the frequency heard by a person standing beside the road behind the car?

A 38.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at 20.0°C is 1.20 kg/m3. Speed of sound in air at 20.0°C is 343 m/s. What is the displacement amplitude of a 38.0-Hz sound wave? What is the ratio of the displacement amplitude to the average distance between molecules in air at room temperature, about 3.00 nm?

A train is traveling at 30.0 m/s relative to the ground in still air. The frequency of the note emitted by the train whistle is 262 Hz. The speed of sound in air should be taken as 344 m/s a) What frequency is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? b) What frequency is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?

A bungee jumper jumps from rest and screams with a frequency of 403 Hz. The air temperature is 20 °C. What is the frequency heard by the people on the ground below when she has fallen a distance of 14.3 m? Assume that the bungee cord has not yet taken effect, so she is in free-fall. Number Units

Thank you! A 77.8-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at 20.0°C is 1.20 kg/m3. Speed of sound in air at 20.0°C is 343 m/s. a) what is the displacement amplitude of a 77.8-Hz sound wave? b) what is the ration of the displacement amplitude to the average distance between molecules in air at room temperature, about 3.00 nm?

A student blows across the top of an empty bottle causing it to resonate at its fundamental frequency. The bottle has a height of h. The speed of sound is 340 m/s. What is the fundamental frequency?  h=0.45m 1. What is the bottle’s third harmonic (i.e., second overtone)?

Early Doppler shift experiments were conducted using a band playing music on a train. A trumpet player on a moving railroad flatcar plays a 320-Hz note. The sound waves heard by a stationary observer on a train platform hears a frequency of 350 Hz. What is the flatcar’s speed in mph? The temperature of the air is TC = 22°C .

BF-4 Anabella is standing on the sidewalk as two fire engines traveling in the same direction pass her as shown below. Both fire engines produce the same frequency 1,500Hz. Engine #1 V₁=25.0m/s Anabella Engine #2 V₂=35.0m/s a) What is the frequency Anabella hears from engine #1? Use the speed of sound as 343.0m/s. b) What is the frequency Anabella hears from engine #2? Use the speed of sound as 343.0m/s. c) What beat frequency does Anabella hear?

A pipe with one closed end vibrates with standing waves at the second harmonic. It produces a C- note that has a frequency of 264 Hz. How long is the pipe? The speed of sound in air is 340 m/s. 0.97 m 1.29 m 1.61 m 0.32 m

A physics professor demonstrates the Doppler effect by tying a 600 Hz sound generator to a 1.0-m-long rope and whirling it around her head in a horizontal circle at 1100 rpm. What are the highest and lowest frequencies heard by a student in the classroom?