1. A welder draws 70 A of current and is run for 2 hours. What is the charge
that has passed through the welder?

504,000 C

Explanation:

An Ampere is a Coulomb per second.

1 A = 1 C/s

1 hour is 3600 seconds.

1 hr = 3600 s

(70 C/s) (7200 s) = 504,000 C

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.

so easy. just google the electromagnetic waves and it’ll pop up.