Ineed with 3-4 above and the question below. urgent ! 100% correct answers? an average depth for the human mouth is about 8 cm. we can model the mouth as an organ pipe that is open at the back of the throat. what are the wavelength and frequency of the first harmonic you can produce if your mouth is open? assume v = 344 m/s. 16 cm; 2150 hz 14 cm; 3000 hz 20 cm; 1980 hz 25 cm; 1500 hz

#3

Length of the vocal chord is given as

speed of the sound is given as

Lowest frequency is given as

As we know that

Now plug in all data in it

now the length is given as

#4

Length of the test tube is given as

Since half of the tube is filled with water so length of resonating column is

speed of the sound is given as

Lowest frequency is given as

Now plug in all data in it

now the length is given as

#given question

Length of the mouth is 8 cm

As we know that for the fundamental wavelength

here L = 8 cm

so wavelength is given as

now for the frequency we can use

temp rises, and expansion