Radiation is an example of a transverse wave t or f

That's true for electromagnetic radiation.

(Not for some other kinds though, like alpha radiation and beta radiation. Those are particles, not waves at all.)

anchor = archer //

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.