Ukuhlaziywa kobukhulu - izinkinga nezixazululo
1. Ngokusekelwe ekuhlaziyweni kobukhulu, nquma ubukhulu befiziksi obulandelayo obunobukhulu obufanayo.
B. amandla kanye nengcindezi
C. amandla kanye nomfutho
D. umsebenzi nokushisa
Kwaziwa:
Ubukhulu bobude = ubukhulu bobubanzi = ubukhulu bokufuduka = L
Ubukhulu besikhathi = T
Ubukhulu besisindo = M
Isixazululo:
Ubukhulu bendawo = ubukhulu bobude x ubukhulu bobubanzi = [L][L] = [L]2
Ubukhulu bejubane = ubukhulu be Ukuhambisa / ubukhulu besikhathi = [L] / [T] = [L][T]-1
Ubukhulu bokusheshisa = ubukhulu bejubane / ubukhulu besikhathi = [L][T]-1 / [T] = [L][T]-1[T]-1 = [L][T]-2
Ubukhulu bamandla = ubukhulu besisindo x ubukhulu bokusheshisa = [M][L][T]-2
Ubukhulu bomsebenzi = ubukhulu bamandla x ubukhulu bokufuduka = [M][L][T]-2 [L] = [M][L]2[T]-2
Ubukhulu bamandla = ubukhulu bomsebenzi / ubukhulu besikhathi = [M][L]2[T]-2 / [T] = [M][L]2[T]-2[T]-1 = [M][L]2[T]-3
Ukulinganisa ingcindezi = ubukhulu bamandla / ubukhulu bendawo = [M][L][T]-2 / [L]2 = [M][L][T]-2 [L]-2 = [M] [L]-1[T]-2
Dimension umfutho = ubukhulu besisindo x ubukhulu bejubane = [M][L][T]-1
Ubukhulu bokushisa = ubukhulu bamandla = ubukhulu bomsebenzi = [M][L]2[T]-2
Impendulo efanele ithi D.
Qaphela:
Heat amandla ahamba ngenxa yokwehluka kwezinga lokushisa.
Umsebenzi inqubo yokudluliselwa kwamandla ngokufuduka kwezinto.
Ngakho-ke, ubukhulu bokushisa = ubukhulu bamandla = ubukhulu bomsebenzi.
2. Amanani amabili anenani elifanayo kodwa analo umqondo ohlukile wezinto ezibonakalayo…
A. Amandla kanye nomfutho
B. Amandla namandla
C. Amandla angenzeka kanye namandla e-kinetic
D. Amandla kanye nomfutho
Isixazululo:
Iyunithi yamandla angase abe khona = iyunithi yamandla amandla kinetic = amayunithi wamandla = amayunithi omsebenzi.
Ayize inawo lowo mbonoe amayunithi, kodwa amandla angase abe khona kanye namandla e-kinetic kuyizinhlobo ezahlukene zamandla.
Impendulo efanele ithi C.
3. Amanani alandelayo anamayunithi afanayo…
A. Amandla kanye ne-emf
B. Ijubane kanye nokusheshisa
C. Umsebenzi namandla
D. Umsebenzi namandla
Isixazululo:
Umsebenzi inqubo yokudluliselwa kwamandla ngokufuduka kwezinto.
Amandla yikhono lokwenza umsebenzi.
Umsebenzi namandla kuyizinto ezimbili zefiziksi ezineyunithi efanayo.
Impendulo efanele ithi C.
