Adog walks 24 steps north and then walks 55 steps west to bury a bone. if the dog walks back to the starting
point in a straight line, how many steps will the dog take and in which direction will the dog walk? use the
graphical method to find the magnitude of the net displacement.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

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.