You hear the dishwasher with a loudness of 40 dB and a siren outside with a loudness of 60 dB. How much greater is the amplitude of the
siren's sound than the amplitude of the dishwasher's sound?

The ratio of the amplitudes of siren to dishwasher is 10.

Explanation:

loudness of dishwasher = 40 dB

loudness of siren = 60 dB

let the intensity of dishwasher is I an the intensity of siren is I'.

Use the formula of intensity and decibels.

And

The intensity if proportional to the amplitude.

area of focus

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.