Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to
45 ms. If it takes a train 8 seconds to reach 45 nys, what is the acceleration of the train? (Round your answer to the
nearest whole number)
4 m/s?
5 m/s2
6 m/s2
7 m/s?

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

iron would move it is magnetic there is a mag field around the current in the wire