Which statement describes a primary difference between an electromagnetic wave and a mechanical wave?
A. Electromagnetic waves need a medium to transfer energy.
B. Electromagnetic waves can only travel through solids, liquids, or
gases.
C. Electromagnetic waves can be transverse, longitudinal, or surface
waves.
D. Electromagnetic waves can travel through empty space.

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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hello there!

your answer is a “generator”

a generator does not create energy but instead it transforms it.

it’s basically a motor working in reverse.

need to see circuit to get time constant