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In physics, gravity (from Latin gravitas 'weight' [1]) is a fundamental interaction primarily observed as mutual attraction between all things that have mass.Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force and 10 29 times weaker than the weak interaction.
Before Newton’s law of gravity, there were many theories explaining gravity. Philoshophers made observations about things falling down − and developed theories why they do – as early as Aristotle who thought that rocks fall to the ground because seeking the ground was an essential part of their nature. [6]
[3]: 210 These triumphs of physics predated the alternative more accurate model for gravity based on general relativity by many decades. Introductory physics textbooks discuss central forces , like gravity, by models based on action-at-distance without discussing the cause of such forces or issues with it until the topics of relativity and ...
Whether the acceleration is from motion or from gravity makes no difference in the laws of physics. One can also understand it in terms of the equivalence of so-called gravitational mass and inertial mass. The mass in Newton's law of universal gravitation (gravitational mass) is the same as the mass in Newton's second law of motion (inertial mass).
I can’t say, ‘Oh don’t go there, there’s a bomb there, and there’s a guy over there, make sure you watch him and don’t get shot.’ You are praying that the decision you make is the right one, and if it is the wrong one – which a couple of decisions were the wrong ones – you are paying the price and you are living with it.
I still don't get it. #23. Computers and software. Plot twist - I am a software developer. #24. Confidence. I don't know how the f**k you become confident but I pretend like I am and it seems to ...
Try to get everything in writing when you can. United Policyholders says you don't necessarily need to go into the process thinking that there will be issues. But you also don't want to be a pushover.
A theory of quantum gravity is needed in order to reconcile these differences. [16] Whether this theory should be background-independent is an open question. The answer to this question will determine the understanding of what specific role gravitation plays in the fate of the universe. [17]