Which best describes loudness? the subjective measurement of the intensity of sound the subjective measurement of the wavelength of a sound wave an inherent measurement of the intensity of sound an inherent measurement of the wavelength of a sound wave

Loudness is the subjective measurement of intensity of sound. Loudness is measured in decibels. its also measured in decibles

the subjective measurement of the intensity

Explanation:

Loudness means how low or loud a sound appears to a listener. Loudness is subjective in nature. It is a measure of intensity of sound- the amount of energy. This is related to air pressure and the amplitude of the sound wave. Intensity is measured in decibels (dB). With increase in every decibel, the intensity of sound increases and a louder sound is heard.

4

explanation:

4

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