Volume or intensity of a sound wave is measured by the size of the and reported in decibles

answer:

the amplitude of a sound wave is a reflection of how much energy is carried, which contributes to the intensity of the sound. intensity is measured in decibels and is perceived as sound volume. thus, the volume is proportional to the amplitude of the sound wave. the frequency of a sound wave is perceived as pitch.

explanation:

ice to water 1 water to vapour 2 latent heat

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27