7/26/2019 Phy Equations

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:

.W =

|F

||X

|cos .v21

v20 = 2a(x1

x0) .F = ma .v1 = v0 +at

.Fspring =kx ) N).frick kN .frics = sN .E = W.P =mV .Espring =

kx2

2 .Ek =

mv2

2 .Ep = mgh

.mivi = miui .F= p

t

mconst Ft= P =mv(+vm) = J , .m1v1+ m2v2 = (m1 + m2)u ,

.v2+ u2 = v1+ u1.f = 1

T .T = 2R

V = 2

w .V = wR .w2R = aR =

V2

R .FR = maR:

.gR : .w= 2f

.V =

GMR

.( T1T2

)2 = ( R1R2

):3( ) .F = GM1M2r2

:

,Ek = GMm

2r = UG

2 : =.UG

GMmr

:

.Etotal= GMm

2r :

.x =v = Awsin(wt + 0) .x= Acos(wt + 0):.w =

km .v =wA2 x2 .a =w2x .x = a =Aw2cos(wt+ 0)

.T= 2w

= 2

mk

: / . Nc .|E| = kq

r2): ) .F = kq1q2

r2 :

.F = Eq

, 4R3

3 ). S)|E||S|cos= E S = Q

0

h2r )h2r+ 2r2 r2h: .4R2

). E= 20

: .Ue = qV = kq1q2

r . p Q = pV

). )E= Vx

.E= Ei .V = kqiri

, , .Q1+ Q2 = Q

1+ Q

2 ,V

1 = V

2 :

. V :0 = .V =const= kqR

outer , E= 0

0 . , ,

A, F . ,v . , w .x0 . E . , T . , Q . , m .

:

.k= 140

= 9 109 Nm2C2 .0 = 8.85 1012 Fml .e =1.6 1019C .G = 6.671011 Nm2kg2

.= 3.1415 .1.67 1027kg : .9.11 1031kg :6.96 108m 1.99 1020kg :

1.74 106 7.35 1022 :6.38 106 5.974 :1024

.109 =nano= nc .106 =micro= c .103 =mili= mc. , : .1012 =pico= pc

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