hbaker565 hbaker565

01-12-2017
Physics

contestada

Which of the following is a true statement?
Question 3 options:

Electromagnetic waves can vary in speed, wavelength and frequency.

Electromagnetic waves are longitudinal waves.

Electromagnetic waves consist of only changing electric fields.

Electromagnetic waves do not always need a medium to travel.

Respuesta :

Sierraa396 Sierraa396

02-12-2017

c. Electromagnetic waves do not always need a medium to travel.

Since they are transverse waves they do not need a material medium

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