calcular el flujo magnético a través de una bobina con 200espiras de 0.02 de radio de superficie cuyo eje es perpendicular a las líneas de campo magnético

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.