If light waves change speed as they pass from one medium into another at an angle, the light will be a. diffracted c. separated b. reflected d. refracted

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.