(go to insert Drawing → New) 1. A 400g mass is resting on an index card.
a. Show your work in determining the weight and the normal force acting on the
object
b. Draw force vectors for those same two forces, weight and normal force
(remote/concurrent students may edit the drawing to include the vectors).
4009
C. If the sled were pushed with increasing force until it started moving. The force
recorded at the instant the sled began to move is 4.38N. What is the acceleration
at that very instant?

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.