Which of the Following Best Explains Why Nuclear Fusion Requires

question 100

Multiple Choice

Which of the following best explains why nuclear fusion requires bringing nuclei extremely close together?

• A)Nuclei normally repel because they are all positively charged and can be made to stick only when brought close enough for the strong force to take hold.
• B)Nuclei are attracted to each other by the electromagnetic force,but this force is only strong enough to make nuclei stick when they are very close together.
• C)Nuclei have to be very hot in order to fuse,and the only way to get them hot is to bring them close together.
• D)Fusion can proceed only by the proton-proton chain,and therefore requires that protons come close enough together to be linked up into a chain.