Air in a tube of length 1.5 meters that is closed at both ends is vibrating at its second lowest frequency (in this case, the second harmonic). Where in the tube should a microphone be placed to get the maximum volume?

For testing purposes, a musical instrument manufacturing company creates a device so that when you blow into one end with your instrument, sound comes out the other end in opposite directions. A sound technician uses a whistle and generates sound waves with a frequency of 242 Hz. The waves travel in opposite directions in a band room, are reflected by end walls, and return. The band room is 44.0 m long and the whistle is located 14.0 m from one end. What is the phase difference (in degrees) between the reflected waves when they meet at the source of the sound? The speed of sound in air is 343 m/s.

The electrical power needed to operate a speaker in your audio system is 18.7 W. If this speaker has a circular opening with a radius of 0.0743 m and the average sound intensity at the opening is 22.1 W/m2, determine the ratio of sound output power Psound to electrical input power Pelectrical. Psound Pelectrical

An observer measured an interval of 10 s between seeing a lightning flash and hearing thunder. If the temperature of the air was 20°C how far away was the source of air

I need the answer as soon as possible

Consider the sound created by resonating the tube shown below. The air temperature is TC = 30.00°C . What are the wavelength, wave speed, and frequency of the sound produced?