Refer to the diagram below. A wire carrying current 1 Amps moving downward. 4 meters of this wire is immersed in an external magnetic field of magnitude 2 Teslas that is directed into the page. What is the magnitude of the magnetic force (in N) on the wire due to the magnetic field? (a) 7N (b) 8N (c) 9N (d) 10N X X X X X X X X X X X I X X X хх X X X| x X X Following question 1, what is the direction of the magnetic force on the wire? (a) upward (b) downward (c) to the left (d) to the right

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.