Turn your protracted to a 90 degree angle
Https://www.slideshare.net/mobile/jan_parker/life-cycle-of-stars-3196871
the answer to your question!
Answer:
<em>Einstein's Big Idea homepage. E = mc2. It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.</em>
Explanation:
<u>hope it helps</u>
with a fan? am I wrong or maybe multiple fans.