Theory, lens optics exactly is “p” (primary principal point)? i get that it’s the “front surface location” but wouldn’t they just make it the same thing as “a” (front vertex position)? feels like i’m missing a theory chunk, was hoping could clear it up, maybe even through an example.

that would be b i just took the test : )

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

no

explanation:

no i dont know how to solve this you should probably try to google the answer