Doug is sliding down the hill on a piece of cardboard. His sister pushes him 3 points from behind. What effect foes this have on his motion? A. he stops
B. he speed up
C. he slows down
D. his motion remain the same

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.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

need to see circuit to get time constant

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me