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How many fundamental forces are there? How many non-fundamental forces are there?

Answer 1

Christopher Ales

four

The electromagnetic field, gravity, the weak force (radiation), and the strong force (nuclear).

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Answer 2

Hailey Alexander

There are four fundamental forces: gravity, electromagnetism, the weak nuclear force, and the strong nuclear force. Non-fundamental forces typically refer to composite forces arising from combinations or interactions of these fundamental forces.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.