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Classical physics refers to theories of physics that predate modern, theories. As such, the definition of a classical theory depends on context. Classical physical concepts are often used when modern theories are unnecessarily complex for a particular situation.
People who work in physics are called physicists. Physicists study matter and the forces (pushes or pulls) that act on it. (Matter is what makes up all physical objects.) Physicists also study many different forms of energy. The objects that physicists study range in size from the tiny building blocks of matter to huge groups of stars.
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Newton’s second law is one of the most important laws in all of physics. It concerns the changes that a force can produce on an object’s motion. A force can change an object’s speed, the direction of its motion, or both. An object’s velocity expresses both how fast and in what direction the object is moving.
Classical physics is considered the limit of quantum mechanics for a large number of particles. On the other hand, classic mechanics is derived from relativistic mechanics. For example, in many formulations from special relativity, a correction factor (v/c) 2 appears, where v is the velocity of the object and c is the speed of light.
For one, physics keeps changing as we progress and make new discoveries. New theories don't just bring new answers. They also create new questions that might not have even made sense when viewed from within the previous theory of physics. This makes physics exciting and interesting, but it also forces attempts at defining physics into ...
- What is G-ForceA G force is when you feel your same weight against you. for example a roller coaster is 2 Gs,which means you will feel 2x your weight which ever d...
- Does the study of physics alter what we discover in mathematics?For sure. Newton invented calculus to solve the specific problem of calculating planetary motion. Bessel functions were invented to solve the spher...
- This wasn't mentioned in the text, but what is dark matter? Why is there so much of it, but it is un...dark matter is matter that doesn't emit or absorb light. We can't directly measure it.
- What is electric force?An electric force would be a specific type of force (a push or pull, such as gravity or friction) that is caused by the electrical interaction of o...
- so if i finish a physics course on khan academy it wouldn't be enough to score 700 ON SAT physics? i...Just completing a course doesn't directly mean that you'll do good on a test. You still have to do applied practice for the test. The AP Physics 1...
- Can Newton’s 1st and 2nd law of motion both be active at the same time?Sure. Newton's first law states that an object at rest or moving with a constant velocity will stay at rest or stay moving with a constant velocity...
- why is there no gravity in space? and why do we have gravity?There actually is gravity in space: the whole reason the Earth orbits around the sun is because the sun is a 'heavy' object that makes an impressio...
