Need ASAP which is one characteristic shared by electromagnetic and mechanical waves?
A: both have a crest and a trough
B: both move due to particles
C: both are formed by charged particles
D: both occur as a result of a disturbance

A: both have a crest and a trough

Explanation:

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the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

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.