2. F = m a F = Dp / Dt F1 = - F2 p = m .v Fg = G = m. g Dp1 + Dp2 = 0 Ft = f Fn
Fd = - Fo F = m .ad = m v2r
3.W = F s P = W/t = F v Ek = ½ m v2 Ep = m g h W = Fg h Ek + Ep = E = konst.
4. Fg = c m1 m2 r2 6.67.10-11 N.m2.kg-2 K = Fg/m Fg = c m MZ (RZ + h)2 Fg =(c.m.MZ)/RZ2 FG = Fg + Fo FG = m g W = Fg (h1-h2) W = m .K(h1-h2) Ep = m. K .h jg = Ep m T12 / T22 = a13 / a23
zvislý: h = v2/2g th = v/g td = v/g
vodorovný: t = Ö2h/g d = vo Ö2h/g h = d2 g/2v2
šikmý vrh: th = vosin j/g td = 2th h = v2sin2 j/2g d = v2sin2 j/g
5. M = F. r M = M1+M2+...+Mn M1+M2+...+Mn=0 - momentová veta W = Fg ( r - h)
Eki = 1/2 Jw2 = 1/2 mi ri2 w2 J = miri2
6.P = F/S F1/ F2 = S1/ S2 W1 = F1. h1 Fvz = Vt Vk g hmotnostný tok-Qm = S .v.V W= FDx = pSDx = pDV
P = DW/DV p1 + 1/2 Vv12 = p2 + 1/2 Vv22 prúdiaca kvapalina-p1+1/2 V v12 = p2 v = 2Dp/V vytekajúca kvapalina-h V g = 1/2 V v2 v = 2hg F = C 1/2 V S v2
7.C = Q/DT c = C/m = Q/mDT c1 m1 ( t1 – t ) = c2 m2 ( t - t2 ) c1 m1 ( t1 - t) = c2 m2 ( t - t2 ) + C ( t - t2 )
DU = W + Q W = -W` Q = DU + W`
8. Ek = 1/2 mo (DN1 v12 + DN2 v22 +...+ Ni vi2 ) vk2 = DN1v12 + DN2v22 +...+ DNivi2 / N vk = 3 k T / mo k - Boltzmannova konštanta = 1.38.10-23 J.K-1 p = F / S Nv = N / V ( N -počet molekúl, V - objem)
p = 1/3Nv movk2 -základná rovnica pre tlak ideálneho plynu pV= 2 / 3 Ek.
pV = N k T Mm = M / n pV= m / MmNakT Rm = Nak = 8.31 J.K-1mol-1
pV = mNakT / Mm pV = n RmT p1V1/T1 = p2V2/T2 = p V/T
(p + a/ Vm2 )(Vm - b)=RmT Van der Waalsova stavová rovnica DU = W-Adiabatický dej
W`=pDV W`= p1DV+p2DV+...+pa DV Q = Q1-Q2 m=W`/Q1=Q1-Q2/Q1=1-Q2/Q1
9. dn = Fp / S da = Ee l = l1(1 + aDt) V = V1 (1 + b. Dt) b = 3a
10.DE= sDS F = sl h = 2s/rgR hrg =2s/R V = V1(1+b Dt)Dt r =r1(1-b Dt)
11. lt = Lt / m ls= Ls / m lv = Lv / m
12. Qe=1.602.10-19C Fe=kQ1Q2/r2 k=1/4pe E=Fe/Q je=W/Q` je=|E|d U=j-j0=|E|d W=QU C=Q/U C=e0S/d Q = CU W=1/2QU W = 1/2CU2 paralelné C=C1+C2 sériové 1/C=1/C1 + 1/C2
13.I=Q/t U=RI Ui
