if you ride your bike at an average speed of 2 km/h I need to travel a total distance of 20 km how long will it take you to reach your destination

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.

i think the answer is a, hope this : )