Question

question 6 (2 points) the speed of all electromagnetic waves in a vacuum is? blank 1:

Explanation:

Step1: Recall physics fact

In physics, the speed of all electromagnetic waves in a vacuum is a well - known constant.

Step2: State the value

The speed is $c = 3\times10^{8}\ m/s$.

Answer:

$3\times10^{8}\ m/s$