Two speakers separated by a distance of 8.00 m create sound waves in phase with each other. You are 6.00 m from one speaker and 10.00 m from the other speaker as shown in the figure. What is the lowest frequency at which you hear complete destructive interference? A. 43 Hz B. 64 Hz C. 86 Hz D. 107 Hz E. 128 Hz

WT-2 A pipe closed at one end and open at the other has a length of 0.750m. Jiatai places a speaker producing a low sound frequency above the open end of the tube. He then increases the frequency slowly. The pipe is in air at sea level. a) Draw the possible standing wave patterns for the sound waves in the tube starting with the lowest frequency. lowest frequency fa fo fa highest open end L=0.750m closed end L%3D L= L= b) Below each pattern write the tube-length-to-wavelength relationship for each pattern. c) Write the general symbolic relationship for the frequency of the n" harmonic, fn. Specify the possible values for n. d) Put the known information into your equation and find the numerical value of the frequencies fa, f, fe, and få. e) Jiatai can hear frequencies up to 19,980HZ. What is the highest frequency of the highest harmonic that Jiatai can hear from this tube and what is the harmonic number n of that harmonic? Answers WT-1 a) L=/4, L=32J4, L=52/4, L=7/4 b) 0.166m WT-2 a)---…

In an acoustics lab you have a 120 m long pipe containing very cold air.  Suppose that using a speaker you cause a sinusoidal wave of sound with frequency 150 Hz and wavelength 1.9 m to travel down the pipe. i)How long does it take for your sinusoidal wave to travel from one end of the pipe to the other end of the pipe? ii)What is the temperature of the air in the pipe?

In an acoustics lab you have a 60 m long pipe that contains very cold air, in fact T = – 46 °C.  Suppose that using a speaker you cause a sinusoidal wave of sound with wavelength 1.5 m to travel down the pipe, going from one end of the pipe to the other. ii) What is the frequency of the sound in the pipe? a) 1.5×102 Hz b) 2.0×102 Hz c) 2.5×102 Hz d) 3.0×102 Hz e) 3.5×102 Hz

As you are stopped for a traffic light an ambulance approaches you with a speed of 17 m/s. The ambulance's siren is emitting a sound wave with a frequency of 950 Hz. Consider the speed of sound to be 340 m/s and compute the frequency of the sound you hear. A.950 Hz B.1000 Hz C.1050 Hz D.1100 Hz E.1150 Hz

A guitar string produces a musical note with a wavelength of 78.0 cm. If the sound's speed in air is 347 m/s, what is the frequency of the note? a. 445 Hz b. 0.29 Hz c. 290 Hz d. 4.4 Hz e. 29 kHz

Problem 1: Wave Resonance Explorationa. You are conducting an experiment to explore resonance in a string fixed at both ends. The string has a tension of 200 N and a linear density of 0.02 kg/m. Calculate the first three resonant frequencies for the string. b. The same string from part (a) is now immersed in water. Determine how the change in medium affects the resonant frequencies.