A proton located at the origin is accelerated in the -y direction for a brief time. (a) How much time passes before a detector located at 0.25, 0,

A proton located at the origin is accelerated in the -y direction for a brief time.

(a) How much time passes before a detector located at <0.25, 0, 0> m detects a radiative electric field? s(b) What is the direction of the radiative electric field observed at this location?  ---Select--- +x -x +y -y +z -z 0 magnitude none of the above (c) If the accelerated particle had been an electron instead of a proton, what would have been the direction of the radiative electric field at this location?  ---Select--- +x -x +y -y +z -z 0 magnitude none of the above