Completar frases PhysicsVersión en línea Review about Physics concepts por Handy Armenta 1 galaxies Physics studies matter phenomena industries goal natural science force scientific fields motion practical applications time universe fundamental scientific disciplines energy space subatomic particles technology medicine engineering smallest behavior crucial role 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 charges poles other magnet motion north north piece iron magnet south iron along direction Opposite atoms force attract aligned the Magnetism exerted each piece 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 .