How do protons ever fuse together in the presence of the electromagnetic force?

Question

How do protons ever fuse together in the presence of the electromagnetic force? There is another force involved here called the nuclear strong force. It is the strongest of all the forces, but it only acts over extremely small distances before it becomes too weak to matter. If protons and neutrons are able to get close enough to one another, the strong force provides a powerful attractive force that can bind them together in a nucleus, despite the electromagnetic force.

choose the condition that would make it more likely for two nuclei to fuse together.

Choose one:

A. The nuclei have opposite charges.

B. The nuclei are moving slowly with respect to one another.

C. The nuclei are moving fast with respect to one another.

D. The nuclei are very massive.

Explanation / Answer

Yes

answer is 'c'

i.e nuclei are moving fast with respect to one another

generally

a. when nuclei have opposite charges they attract but generally this doesn't happen

d. the massiveness of nuclei doesnt play a part here

so finally we need to choose among B and C

when 2 nuclei move slowly with respect to one another it means that they have less interaction between them and this opposes our given paragraph

hence answer is C

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