Derek and wes take a photograph of a lake at the same angle and the same time of day. derek's picture comes out with crisp edges around objects in the photo. wes's picture seems to blur the outlines of objects due to glare. which wave phenomenon best explains the differences between the pictures? diffraction dispersion reflection polarization

correct it is c.) b b

conservation of mass

mass before something happens = mass afterwards

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.