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The proton motive force arises from a combination of the concentration gradient of protons and a voltage gradient across the membrane (the protons are positively charged, so an imbalance of protons means that the side of the membrane with more protons has a positive charge relative to the side with fewer protons).
The Nuclear Force. The protons in the nucleus of an atom are positively charged. If protons interact, they are usually pushed apart by the electromagnetic force.(Remember, opposite charges attract, but like charges repel!). However, when two or more nuclei come VERY close together, the nuclear force comes into play.The nuclear force is a hundred times stronger than the electromagnetic force so the nuclear force may be able to glue the nuclei together so fusion can happen. The nuclear force is also known as the strong force.This is one of the four fundamental forces in the Universe. The nuclear force keeps together the most basic of elementary particles, the quarks. Quarks combine together to form the protons and neutrons in the atomic nucleus.he Nuclear Force. The protons in the nucleus of an atom are positively charged. If protons interact, they are usually pushed apart by the electromagnetic force.