Two electromagnetic waves are moving in ...

Two electromagnetic waves are moving in free space whose electric field vectors are given by `vecE_1 =vecE_0 hatjcos(kx -omegat)` & `vecE_2 = vecE_0 hatk cos(ky -omegat)`. A charge `q` is moving with velocity `vecv = 0.8 c hatj`. Find the net Lorentz force on this charge at `t = 0` and when it is at origin

`qE_0(0.4hati + 0.2hatj + 0.2hatk)`

`qE_0(0.8hati + hatj + 0.2hatk)`

`qE_0(0.6hati + hatj + 0.2hatk)`

`qE_0(0.8hati + hatj + hatk)`

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