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