which is an example of the electromagnetic force?\na compass needle points north toward earths magnetic…

which is an example of the electromagnetic force?\na compass needle points north toward earths magnetic pole.\nan iron nail rolls off a table and falls to the ground.\nthe moon pulls on the water in earths oceans, causing tides.\nprotons that make up a nitrogen atom stay together in the nucleus.
Answer
Brief Explanations:
The electromagnetic force is responsible for interactions between charged particles and magnetic - related phenomena. A compass needle pointing north is due to the interaction between the magnetic properties of the needle and Earth's magnetic field, which is an electromagnetic effect. An iron nail falling is due to gravity. The moon - water interaction causing tides is also gravitational. Protons staying together in the nucleus is due to the strong nuclear force.
Answer:
A. A compass needle points north toward Earth's magnetic pole.