1. what are the units for force? 2. what makes a force balanced?

3. what is the net force when balanced?

im stuck on these can someone help me please?

1. Newton

2. when the forces acting on an object have equal strength and act in the opposite directions, they are balanced

3. 0

Explanation: ^

The answer is 36.

An atom usually contains protons, neutrons and electrons. Atomic number means the number of protons in the atom, while mass number is the sum of protons and neutrons of the atom.

Therefore, in order to find the number of neutrons, we just need to subtract the number of protons from the mass number.

75 - 39
= 36

The number of neutron is 36.