For two objects in space with very different masses, the gravitational force causes:
A. a force that makes the less-massive object orbit the more-
massive one.
B. a force that makes the more-massive object orbit the less-massive
one.
C. no net force since the equal but opposite forces cancel each other
out.
D. a force in a constant direction that acts only on the larger of the
two masses.

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

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.