An unknown noise is generated in a building. sound waves move toward an open doorway. waves of which wavelength would diffract the least through the doorway and spread into the room? 15 centimeters 1 meter 5 meters 12.5 meters

The answer is 15 centimeters. The waves with the smallest wavelengths (also highest frequency) have the least capacity to diffract around objects hence have a shadowing effect, behind the object, especially if the wavelength is small compared to the object. This is also the reason why high-frequency electromagnetic waves do not have a good reach in mountainous regions.

Answer

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

explanation

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

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