Aground-fault circuit interrupter is a (an) a)wire that provides an easier path for a current to take if a short circuit develops b) electrical safety outlet that monitors current flowing to and from an appliance c) switch that opens when current in a circuit is too high

so easy. just google the electromagnetic waves and it’ll pop up.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west