A block is pulled by two horizontal forces of 15N and 25N to the left , and by two horizontal forces of 10N and 30N to the right 1 Draw these four forces vectors in the Cartesian plane ( acting at the origin )

2 Find the magnitude and direction of the resultant force

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle

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.