The complete formula of physics compulsory 3-1 in Senior High School Detailed explanation and related formula

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• 1. The use of the formula of uniform speed change linear motion in senior high school physics compulsory 1 That is, when to use this formula
• 2. The useful corollary vt2-vo2 = 2As is derived? Is the formula vs / 22 = (VO2 + vt2) / 2 also derived?
• 3. High school physics can only be used to find the formula of uniform variable speed linear motion
• 4. Senior high school physics compulsory formula and formula derivation (derivation process) urgent!
• 5. What is the derivation formula of sinusoidal AC RMS? Such as the title
• 6. Elementary mathematical derivation method of sinusoidal alternating current RMS
• 7. Why is the RMS of sinusoidal alternating current equal to twice the root of the peak?
• 8. I don't know if it's right that I use calculus to deduce the effective value of sine alternating current I use calculus to deduce the voltage and current RMS of sinusoidal alternating current. I don't know if the process is correct
• 9. Derivation of several typical effective value calculation formulas of alternating current
• 10. The frequency of a sinusoidal alternating current is 50 Hz, the effective value is 5 A, and the initial phase is - II / 2 I hope the answer is more detailed
• 11. All the formulas involved in 2
• 12. All the formulas of physics compulsory one in Senior High School
• 13. What is the formula of the first section of compulsory Physics 1 in senior high school? Just in high school, I was very busy, so I didn't pay much attention to physics. Who gave me all the formulas? I'm really in a hurry now. The first chapter was pulled down. Thank you. It's better to write down the meaning of each letter. Thank you. There's a reward Thank you!
• 14. Senior high school physics compulsory 1 Chapter 2 Formula Please, as long as the second chapter of the formula, with some explanation, thank you
• 15. Why does the voltage at both ends of option D decrease? My analysis is: in Figure B, if the resistance is R and the total resistance is ignored, it is R / 3. Compared with figure B, the resistance in Figure C is 3R / 2 and the resistance increases, so the total current decreases, the voltage in the power supply decreases, the terminal voltage increases, ur1 decreases, and the voltages of R2 and D increase and are equal
• 16. The storage ring of Beijing Electron Positron Collider (BEPC) is an approximate circular orbit with a circumference of 240m. When the current generated by electrons flowing at the speed of 110% of the speed of light is 10mA, the number of electrons running in the ring is (known speed of light C = 3 × 108 & nbsp; m / s, electronic charge e = 1.6 × 10-19 & nbsp; c) () A. 5×1010B. 5×1011C. 1×102D. 1×104
• 17. In a complete circuit, if a section of wire has no resistance, that is, no voltage, then from the micro point of view, in the circuit, the electrons moving along the direction of the electric field form a current, and the voltage of that section of wire depends on the work done by the electrostatic force. With the change of electric potential energy, as long as the electrons move in a directional direction, there must be voltage. Isn't that contradictory?
• 18. The total energy released in the internal and external circuits is determined by () A. Electromotive force of power supply B. current through power supply C. terminal voltage D. sum of internal and external resistance
• 19. In the microscopic expression of current: I = NESV, s refers to the cross-sectional area. In the definition formula: I = q / T, it is said that it has nothing to do with the cross-sectional area. What is the reason?
• 20. What is the difference between Q in I = q / T and Q in I = (qnsvt) / T What do Q and Q stand for