1. What is the net force on the electron moving v = 3x10^4 m/s 25 degrees with respect to x-axis in the magnetic field in the if B = 5 T up?
2. Two long bar magnets, positioned on a table with their north poles facing each other, exert a force of 2.5 N on each other. If the distance between these two poles is doubled what is the new value of the force between them?