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Is it true or false that all electromagnetic waves travel at the same speed in a vacuum?



Answer :

NaiNai27
Yes they do 
Normally the speed is 186,282 miles per second
and all of the electromagnetic waves travels at this speed so they all travel at the same speed.
Hope this helps!
AL2006
Truer words were never spoken.

The "speed of light" is also the speed of radio, the speed of microwaves,
the speed of heat, the speed of X-rays, etc.

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