What is the speed of a helicopter that traveled 1200 miles in 7 hours

The answer is 171 m/h

Explanation:

Speed relates to positional change with time, that is, it expresses the distance traveled in a given time.

The speed is expressed as

The helicopter has to travel 1200 miles (distance) in 7 hours (time). Then we can replace the values in the velocity formula.

Therefore the helicopter speed is equal to 171 m/h

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.

found in the nucleus

has mass of one amu