The range of human hearing extends from approximately 20 hz to 2 hz. find the wavelength for 20 hz when the speed of sound in air is 359 m/s. answer in units of m.

Wavelength of sound wave corresponding to 20 Hz frequency will be 17.95 m

Explanation:

We have given that range of human hearing extends from 20 Hz and 20000 Hz

Velocity of sound wave is given 359 m /sec

We have to find the wavelength of the sound wave corresponding to 20 Hz

We know that velocity of sound wave is given by , here v is velocity is wavelength and f is frequency

So

So wavelength of the sound wave corresponding to 20 Hz frequency will be 17.95 m

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50