Physics, 21.12.2019 05:31 naimareiad
There are two types of waves, mechanical and electromagnetic. microwaves, infrared, and radio was are examples of electromagnetic waves. which statement is true about the speed of an electromagnetic wave?
a) it is not affected by changes in media.
b) it is slower in a vacuum than in a medium.
c) in a vacuum, its speed equals half the speed of light.
d) it slows down when it goes from a vacuum to a medium.
Answers: 2
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There are two types of waves, mechanical and electromagnetic. microwaves, infrared, and radio was ar...
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