Why gravity is still regarded as one of the fundamental forces?
It is a fundamental force in the sense that it cannot be described and explained as being an aspect of any other force.
I'll make a comment even though I'm not sure what you mean when you use the word "still" in the question.
Because gravity cannot be derived from any other force theory—strong, weak, electromagnetic, or otherwise—as a special case or a consequence, it must be regarded as fundamental. Based on general relativity, we characterize gravity as the result of the curvature of spacetime caused by distributions of mass.
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Due to its fundamental role in shaping the structure and dynamics of the universe, its ability to govern the motion of celestial bodies, its ability to explain the attraction between masses, and its description by Einstein's theory of general relativity, gravity is still considered one of the fundamental forces.
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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.
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.
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.
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.
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