The physical celestial body movement formula and the derivation formula all as well as the proportion relations

The physical celestial body movement formula and the derivation formula all as well as the proportion relations

In fact, there is only one formula, that is, the square of the period is proportional to the radius cube, which is Kepler's third theorem. The rest is that gravity can be interchanged with centripetal force. The centripetal force formula can be written in the form of linear velocity, angular velocity and period, plus a form of gravitational acceleration (mg). This is all the formulas. The source of all formulas is Kepler's third theorem, As for the use of calculus, if you need detailed proof, please ask the most questions

There seems to be a formula in the uniform acceleration linear motion of physics
What does △ x = at * t (a times the square of T) mean? How can it be calculated?

This is the application of the successive difference method, which is suitable for calculating the acceleration of the strip. X1 = v1t 1 / 2at & # 178;, X2 = v2t 1 / 2at & # 178;, X1 and X2 are the displacements that pass through in the adjacent equal time. V2 = V1 at △ x = x2-x1 = at & # 178;

All the formulas of electric power
Help summarize all the formulas of electric power in Chapter 8, the more complete the better

Electric power part 12. P = UI (empirical formula, suitable for any circuit) 13. P = w / T (definition formula, suitable for any circuit) 14. Q = I ^ 2rt (Joule's law, suitable for any circuit) 15. P = P1 + P2 + +PN (suitable for any circuit) 16. W = uit (empirical formula, suitable for any circuit) 17. P =

All the knowledge and formulas of electric power
People's Education Press

Electric power W
Electric work is equal to current times voltage times time w = uit (common formula)
Electric work is equal to electric power times time w = Pt
Electric work is equal to charge times voltage w = QT
Electric work is equal to the square of current times resistance times time w = I × IRT (pure resistance circuit)
Electric work is equal to the square of voltage divided by resistance and then multiplied by time w = u &; u △ R × t (same as above)
Electric power p
① Electric power is equal to voltage times current, P = UI
② Electric power is equal to the square of current multiplied by resistance P = IIR (pure resistance circuit)
③ The electric power is equal to the square of the voltage divided by the resistance P = UU △ R (as above)
④ Electric power is equal to electric work divided by time p = w: T