Consider a wire mounted vertically using a lab stand. if a current is flowing upward in the wire, what it the direction of the magnetic field from the wire at a point 2 cm west of the wire? a. east b. west c. down d. south e. north

Heat from the sun reaches earth to a. radiation b. convection c. conduction

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?