Which feature of electromagnets makes them more useful than permanent magnets in many modern technologies?
O A. The current can be adjusted to control the strength of the
magnetic field.
B. The strength of the magnetic field is more consistent in
electromagnets.
O C. Electromagnets are not dependent on a power supply.
O D. Electromagnets cannot be turned on and off.

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!

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