Simba remagetsi - matambudziko nemhinduro
1. Kana simba remagetsi risingachinji riri 144 N, daro riri pakati pemachaji ese ari maviri nderei … (1 μC = 10 -6 C uye k = 9.10 9 Nm 2 .C -2 )
Zvinozivikanwa:
Simba remagetsi (F 12 ) = 144 N
Chaja 1 (q 1 ) = 10 μC = 10 x 10 -6 C
Chaja 2 (q 2 ) = 4 μC = 4 x 10 -6 C
Nguva dzose (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = mita
Zvinodiwa: Kureba pakati pemari dzese dziri mbiri (r)
Solution:
Kuenzanisa kwemutemo waCoulomb :
F = simba remagetsi risingachinji, k = Coulomb's constant, q = kuchaja kwemagetsi, r = daro pakati pechaja dzese dziri mbiri
Kureba pakati pemachaji ese ari maviri (r) = 5 x 10 -2 metres = 5 x 10 -2 x 10 2 cm = 5 cm.
2. Machaji maviri akaparadzaniswa nedaro re r . Kana simba remagetsi risingachinji riri 3.6 N, daro riri pakati pemachaji ese ari maviri nderei (1 μC = 10 -6 C uye k = 9.10 9 Nm 2 .C -2 )
Zvinozivikanwa:
Simba remagetsi (F 12 ) = 3.6 N
Chaja 1 (q 1 ) = 9 μC = 9 x 10 -6 C
Chaja 2 (q 2 ) = 4 μC = 4 x 10 -6 C
Chimiro cheCoulomb (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = mita
Zvinodiwa: Kureba pakati pemari dzese dziri mbiri (r)
Solution:
Kureba pakati pemachaji ese ari maviri (r) = 0.3 m = 0.3 x 100 cm = 30 cm.
3. Mapoinzi matatu ekuchaja sezvakaratidzwa mumufananidzo uri pazasi. Simba remagetsi risingachinji riri paA rinokura sei (k = 9.10 9 Nm 2 .C -2 ; 1 μ = 10 -6 )
Zvinozivikanwa:
murandu A (q)A) = -2 μC = -2 x 10-6 C
Chaja B (q B ) = 8 μC = 8 x 10 -6 C
Chaja C (q C ) = 4,5 μC = 4,5 x 10 -6 C
Nguva dzose yaCoulomb (k) = 9 x 10 9 Nm 2 .C -2
Kureba pakati pemari A neB (r AB ) = 4 cm = 4 x 10 -2 m
Daro pakati pemari A neC (r AC ) = 3 cm = 3 x 10 -2 m
C = Coulomb, N = Newton, m = mita
Zvinodiwa: Simba remagetsi risingachinji panzvimbo A
Solution:
Kuenzanisa kwemutemo waCoulomb:
F = simba remagetsi risingachinji , k = nguva dzose yaCoulomb , q = kuchaja kwemagetsi , r = daro pakati pechaja dzese dziri mbiri
Simba remagetsi risingachinji panzvimbo A:
4. Kuchaja kwenzvimbo nhatu sezvakaratidzwa mumufananidzo uri pazasi. Simba reCoulomb rakaonekwa sei neCharge B (k = 9.10 9 Nm 2 .C -2 ; 1 μC = 10 -6 C ).
Zvinozivikanwa:
q A = 10 µC = 10 x 10 -6 C = 10 -5 Coulombs
q B = 10 µC = 10 x 10 -6 = 10 -5 Coulombs
q C = 20 µC = 20 x 10 -6 = 2 x 10 -5 Coulombs
r AB = 0.1 mita = 10 -1 m
r BC = 0.1 mita = 10 -1 m
k = 9 x 10 9 Nm 2 C −2
Vaida: Coulomb force yaisangana naCharge B
Solution:
Kune mauto maviri eCoulomb anobata basa paB, Coulomb force pakati peA neB (F AB ) uye Coulomb force pakati peB neC (F BC ). Coulomb force inowanikwa neB isimba reF AB neF BC.
Simba reCoulomb pakati pemhosva A neB:
Mari A yakasainwa zvakanaka uye mari B yakasainwa zvakanaka kuitira kuti F AB iratidze kuna C.
Simba reCoulomb pakati pemhosva B naC:
Mutero B wakasainwa kuti une positive uye mutero C wakasainwa kuti une positive kuitira kuti F BC ienderane nemutero A.
Simba reCoulomb rinoonekwa nechaji B:
F B = F BC – F AB = 180 – 90 = 90 N
Simba reCoulomb rinowanikwa nechaji B (F B ) i90 Newtons. Kutungamira kweF B kwakafanana nekutungamira kweF BC points kune chaji A.
5. Sarudza hukuru uye gwara reCoulomb force pachaji B ( k = 9 x 10 9 Nm 2 C −2 , 1 μC = 10 −6 C).
Zvinozivikanwa:
Chaja A (q A ) = +Q
Chaja B (q B ) = -2Q
Chaja C (q C ) = -Q
Kureba pakati pemari A neB (r AB ) = r
Kureba pakati pemari B neC (r BC ) = 2r
k = 9 x 10 9 Nm 2 C −2
Zvinodiwa: Hukuru uye kutungamira kweuto reCoulomb riri pachigaro B
Solution:
Simba reCoulomb pakati pemhosva A neB:
Chaja A iri positive uye chaja B iri negative zvekuti divi reF AB rinonongedzera kuchaja A.
Simba reCoulomb pakati pechaji B nechaji C:
Chaja B haina kunaka uye chaja C haina kunaka zvekuti divi reF BC rinonongedzera kuchaja A.
Mutemo weNet Force pamhosva B:
F = FAB +FBC = 2 k Q2/r2 + 0.5 k Q2/r2 = 2.5 k Q2/r2 = 2.5 k Q2 r-2
Kutungamira kwenzvimbo dzekumanikidza kuenda kuA kana kuruboshwe.
