高中物理基本公式

静力学：

  1．重力                                                                G=mg

  2．弹簧力 胡克定律及其变形式                                 F=kx，

  3．物体受共点力平衡条件                         合力为零（，）

  4．滑动摩擦力                                                        

     静摩擦力                                                  

  5．浮力                                                           

  6．密度                                           ，，

  7．力矩                                                            

  8．两个力的合力                                 

运动学：

  1．匀速直线运动                                       ，，

  2．匀变速直线运动

    （1）基本公式：

        nT时的即时速度                                     v1：v2：v3=1：2：3 

        nT时的总位移                                      S1：S2：S3 =1：4：9

        第nT内的位移                                 S第1：S第2：S第3=1：3：5

        加速度求法                                   , 即  S2－S1=aT2

   （3）初速为零，位移等分:

         运动nS时的时刻                                 t1：t2：t3=1：：

        运动nS时的即时速度                            V1：V2：V3=1：：

        通过第n个S的时间                     

   （4）平均速度                                  

   （5）中间位置的即时速度                                  

  2．自由落体：                                    ，， 

     下落时间，落地速度                                   ，                                                                                                                                                                                                

  3．上抛运动                       ，，

     上升时间，飞行时间                                    t上=t下＝ ，   

          上升最大高度：                                                

  4．平抛运动

        水平方向：                                          ，    X=V0t

        竖直方向：                                ，   h=gt2  ,  

        合运动：                                  ，

运动定律

  1．牛顿运动定律                                ，动力-阻力=ma

  2．系统法                                            动力-阻力=总质量×加速度

圆周运动  万有引力

  1．V?    T?   f?                                       ，

                                                  ，   

  2．向心加速度公式：                             

  3．向心力公式                          

  4．万有引力定律                                 F=G  G=6.67×10－11

  5．涉及引力的计算模式：                                          引力==向心力

  6．人造卫星的线速度和周期                                 ，

  7．第一宇宙速度                                          ，

机械能

1．功                                                                

2．恒力功                                                         W=FSCos

  3．平均功率                                                      

  4．瞬时功率                              ，力与速度同向时 Pt=FtVt

  5．动能                                                   Ek==mV2,  Ek=

重力势能                                              Ep=mgh，

弹簧的弹性势能                                                 

     机械能                                             动能+弹性势能+重力势能

  6．动能定理:                                           W外= mv22—mv12

  7．机械能守恒定律:                             条件: 只有重力和系统内弹力做功

                                                      mgh1+mv12==mgh2+mv2 

  8．功能原理：              外力和“其它”内力做功的代数和等于系统机械能的增量

  9．功能关系：  摩擦力乘以相对滑动的路程等于系统失去的机械能，等于摩擦产生的热

振动和波

  1．简谐振动的回复力                                                  F=－kx

  2．单摆振动周期                                                 

  3．弹簧振子周期                                                  

  4．波长                                                         

  5．波速                                                         

热和功

  1．油膜法测量分子直径                                                

  2．分子的质量                                                       

  3．摩尔体积                                                          

4．分子所占的体积                                                    

  5．分子的直径，固液分子距离                            

  6．热力学第一定律                                               

  7．没有物态变化时的吸、放热量                                       

静电学

  1．库仑定律：                                                    

  2．电场强度：  定义式                                                       

      点电荷电场场强                                                  

       匀强电场场强                                                     

  3．电势，电势能                                        ，

  4．电场力的功                                                       W=qUab

  5．粒子通过加速电场                                              

  6．粒子通过偏转电场的偏转量                    

     粒子通过偏转电场的偏转角                                

  7．电容器的电容                                                       

    电容器的带电量                                                      Q=cU

    平行板电容器的电容                                               

恒定电流

  1．欧姆定律                                           U=IR  

  2．电阻定律                                                         

  3．电功率                                        P=UI  纯电阻  

  4．电功                                     W=Pt=UIt  纯电阻 

  5．焦耳定律                                                      

  6．串联电路总电阻                                                R=R1+R2+R3

                     电压分配                                    ，

             功率分配                                    ， 

  7．并联电路总电阻                                 

     并联电路电流分配                                      ，I1=

     并联电路功率分配                                     ，

  8．全电路欧姆定律                                      ，

  9．路端电压                                             U=E－Ir    

  10．电源的效率                                               

  11．电源总功率                                                          P总=IE

     电源输出功率                                           

     电源内电路消耗功率                                                  P内=I2r

     电源输出功率最大的条件                                               R=r

  12．串联电池组：                                            ，

      并联电池组：                                               ，

磁场：

  1．安培力                                                     垂直时  F=BIL   

  2．罗仑兹力                                                 垂直时   f=qvB

  3．粒子在磁场中圆运动基本关系式                                  

粒子在磁场中圆运动半径和周期                            ，

  4．磁通量                              =BS有效（垂直于磁场方向的投影是有效面积）

  5．磁力矩                            M=nBIS有奖 （平行于磁场方向的投影是有效面积）

电磁感应

  1．直导线切割磁力线产生的电动势                                   

  2．法拉第电磁感应定律                                      =

  3．直杆平动垂直切割磁场时的安培力                                  

  4．转杆电动势公式：                                               

  5．感生电量（通过导线横截面的电量）：                                  

  6．自感电动势：                                                     

交流电

  1．中性面                                                      m=BS , e=0

  2．电动势最大值                                          ，

  3．正弦交流电流的瞬时值                                           i=ImSin

  4．正弦交流电有效值                                     最大值等于有效值的倍

  5．变压器                                                 ，

  6．感抗                                  　　　　　　　　　　　　 

   7．容抗