How can physical formulas be efficiently remembered and applied?
Physics is considered by many students to be one of the “most difficult” disciplines, one of which is the fact that there are a large number of physical formulas that require memory. However, physical formulas are by no means a combination of the letters of the dead in isolation, but they are mathematical expressions of the laws of nature. You know the right way, you can remember them, but you can solve them with more than one hand.
1. Understanding over memory
Every physical formula has its underlying physical meaning. For example, I saw F = ma You should not just remember these letters, but rather emerge in your mind: changing the motion of an object (resulting in acceleration). a) The larger the mass (m) of the object, the greater the thrust or pull (F) required. When you really understand this causality, the formula cannot be forgotten.
2. Building formulae knowledge trees
Physical knowledge is systematic. Our Physical Formula Speed-up Tool deliberately divides the formula into modules such as mechanics, motors, power and energy, electromagnetics, etc. This is because many formulas can be extrapolated from one another:
- Combining physical and mental sciences: A mastery of the gymnastic formula ($s = v 0t +) You can solve almost all the flat-speed stress problems.
- Similarity between electromagnetic and mechanical: Cullen's Law.（$F = k\frac{q_1q_2}{r^2}$）andThe law of gravity.（$F = G\frac{m_1m_2}{r^2}$）Yes.形式Go, go, go!完AllYeah.称，One.Yes.电荷，One.Yes.质量，Ry.BreakYes.Here.PlantYeah.称SexJust...Yes.SameTime记住Two.individualFormula。
- Energy is constant: Dynamic energy atheories ($W = \Delta) E k$) and mechanical persistence are “gived keys” to physics, and many complex stress analyses can become very simple if they are to be solved by a energy perspective.
3. Analysis of units of concern and quantitative frameworks
It's a secret weapon for a lot of schoolboys. When recording formulae or checking the calculation results, check whether the units on both sides are consistent. Like the formula of the work. $W = Fs$, J on the left, N.M. on the right, and in international unit systems, 1 J is exactly 1 J is the same as 1 J N·m。 If you're not sure if the formula is right at the exam, you can test it by extrapolating the units on both sides.
About this tool
The home physics formula schematics cover the core equations from elementary physics in high and high schools to general physics in some universities. Supports the vague search for Chinese English names, descriptions and alphabet formulae. It can be used as a ready-to-read electronic dictionary, both in the usual writing exercise and at the end of the review.