Question

light & the atomic model unit test study guide:
name: judeth
period: 3 date:
section #1: the electromagnetic spectrum, wave, & frequency

1. what is the speed of all forms of electromagnetic radiation (emr) in a vacuum?
2. how are...

Explanation:

In physics (a subfield of Natural Science), the speed of all electromagnetic radiation in a vacuum is a fundamental constant. By definition and scientific consensus, electromagnetic waves (including all forms of EMR like light, radio waves, etc.) travel at the speed of light in a vacuum.

Answer:

The speed of all forms of electromagnetic radiation (EMR) in a vacuum is the speed of light, which is approximately $3.0\times10^{8}\ \text{m/s}$ (or $300,000,000$ meters per second).