ANSWER ASAP What causes magnetic domains

A. Magnetic fields of atoms aligning

B. Electricity moving through iron

C. Iron being placed near a magnet

D. Magnetic poles magnets attracting each other

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up

Properties seen when one one substance changes to another are known as properties