Completar frases PhysicsVersión en línea Review about Physics concepts por Handy Armenta 1 industries universe engineering subatomic particles Physics time technology scientific fields fundamental space practical applications studies matter scientific disciplines medicine phenomena natural science crucial role force motion galaxies energy behavior goal smallest is the that , its and through and , and the related entities of and . Physics is one of the most , and its main is to understand how the behaves . It encompasses a wide range of , from the to the largest . Physics plays a in many other and has in various , including , , and . 2 attract motion exerted Opposite other south aligned piece each poles iron Magnetism magnet north force iron along magnet north atoms direction the piece charges Magnetism is the force by magnets when they or repel each other . is caused by of electric . All magnets have and poles . poles are attracted to other , while the same repel each . When you rub a of a , the - seeking poles of the in the iron line up in the same . The generated by the atoms creates a magnetic field . The of has become a .