Me> a proton travels at right angles through a magnetic field of 0.025 teslas. if the magnitude of the magnetic force on the proton is 1.8 × 10-14 newtons, what is the velocity of the proton? the value of q = 1.6 × 10-19 coulombs.

a. 1.8 × 105 meters/second
b. 1.8 × 106 meters/second
c. 2.5 × 106 meters/second
d. 3.8 × 106 meters/second
e. 4.5 × 106 meters/ second

The “death throes” of stars are amongst the most complex phenomena in all of astronomy, and the “corpses” of stars amongst the most energetic and exotic objects in existence. beginning at the end of the core helium fusion stage in a star’s life, describe in detail the post-main sequence development of both (a) a 1.0 solar mass star, and (b) a 25.0 solar mass star. in what significant ways do they differ? what role does each of these types of stars play in the "star-gas-star" cycle and the evolution of chemical elements in our galaxy?

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? ?

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question