Find the net force on a rope which is being pulled by 2 groups of students. The blue team is pulling with a force of 1500 N to the west and
the orange team is pulling with a force of 1300 N to the east.

200 N to the west b/c we have 1500 to west and

1300 N to east . the forces have a opposite direction.

thus we add the force. and we gain 200N force.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

i would say b

explanation:

but i think i would need more information than that