Vector is perpendicular to x axis or i component.
Hence i component is 0
j component is 63.5

Because if there's no force on the object, then it just moves in a straight line.
You would have done 240 joules of work on the box.
Work = (force) x (distance)
= (60 newtons) x (4 meters)
= 240 joules .
Radio waves have the longest wavelengths
I think they gain electrons, I could be wrong but I believe it was that, hope this helps! Have a good day