4 Izibonelo zobuningi obutholakalayo, ubukhulu bamazwe ngamazwe kanye namafomula eyunithi
| Ubuningi obutholiwe | Ifomula | Iyini inani eliyinhloko elihlanganisiwe? | Ubukhulu benani elitholiwe | Uhlelo Lwamazwe Ngamazwe Lwamayunithi Inani elitholiwe |
| Kukhulu | Ubude x ububanzi | Ubude (2) | [L2] | m2 |
| Umthamo we-cuboid | Ubude x ububanzi x ukuphakama | Ubude (3) | [L3] | m3 |
| Ubuningi | Isisindo / Umthamo | Isisindo (1), ubude (3) | [M] / [L]3] = [M][L-3] | Kg / m3 |
| I-Kecepatan | Ibanga / isikhathi | Ubude (1), isikhathi (1) | [L] / [T] = [L] [T]-1] | m / s |
| Ukusheshisa | Isivinini / isikhathi | Ubude (1), isikhathi (2) | [L] [T]-1] / [T] = [L] [T]-2] | m / s2 |
| I-Gaya | Isisindo x ukusheshisa | Isisindo (1), ubude (1), isikhathi (2) | [M][L][T-2] | Amakhilogremu m/s2 |
| Ibhizinisi | Amandla x ukufuduka | Isisindo (1), ubude (2), isikhathi (2) | [M][L][T-2][L] = [M][L2][T-2] | kg m2/s2 |
Ukuze uthole inani lamanani ayisisekelo, qala uthole ifomula yenani elithathwe.
Ubuningi obutholiwe: Amandla
Ifomula Yamandla
P=W/t
Incazelo: P = amandla, W = umsebenzi, t = isikhathi
Isikhathi siyinani eliyisisekelo, kuyilapho u-W eyinani elithathwe, ngakho-ke nciphisa umsebenzi kuze kube yilapho kusele inani eliyisisekelo kuphela.
Ifomula Yebhizinisi
W = F s
Incazelo: W = umzamo, F = amandla, s = ukufuduka
Ukususwa kuyinani eliyisisekelo lobude, kuyilapho amandla kuyinani elithathwe, ngakho-ke nciphisa amandla kuze kube yilapho kusele inani eliyisisekelo kuphela.
Ifomula yokuphoqelela
F = ma
Incazelo: F = amandla, m = isisindo, a = ukusheshisa
Isisindo yinani eliyisisekelo lobude, kuyilapho ukusheshisa kuyinani elithathwe, ngakho-ke nciphisa ukusheshisa kuze kube yilapho kusele inani eliyisisekelo kuphela.
Ifomula yokusheshisa
a = v/t
Incazelo: a = ukusheshisa, v = ijubane, t = isikhathi
Isikhathi siyinani eliyisisekelo, kanti isivinini siyinani elithathwe, ngakho-ke yehlisa isivinini kuze kube yilapho kusele inani eliyisisekelo kuphela.
Ifomula yesivinini
v = s/t
Incazelo: v = ijubane, s = ukufuduka, t = isikhathi
Ukususwa kuyinani eliyisisekelo lobude, isikhathi siyinani eliyisisekelo.
Ifomula Yamandla
Hlela kabusha ifomula yamandla:
Incazelo: m = isisindo, s = ubude, t = isikhathi
Inani eliyinhloko
Amandla aqukethe inani elilodwa eliyisisekelo lobunzima, inani eliyisisekelo elibili lobude kanye nenani eliyisisekelo elithathu lesikhathi.
Ubukhulu Bamandla
Ngokusekelwe kufomula yamandla equkethe kuphela amanani ayisisekelo angenhla, ubukhulu bamandla yilokhu:
[M][L2] / [T3] = [M][L2][T3]
Iyunithi Yamandla Yamazwe Ngamazwe
Ngokusekelwe kufomula yamandla kanye nobukhulu obungenhla, iyunithi yamandla yamazwe ngamazwe yile:
Imitha yekhilogremu eyisikwele ngomzuzwana ihlukaniswe ngama-cube (kg m2/s3)
Imibuzo yobuningi ethathwe
| Ubuningi obutholiwe | Ifomula yobuningi ethathwe | Ubuningi obutholakalayo buhlanganisa inani eliyisisekelo elingaki? | Ubukhulu benani elitholiwe | Uhlelo lwamazwe ngamazwe lwamayunithi atholakalayo |
| UDaya | Umzamo / isikhathi (W / t) | |||
| Amandla e-Kinetic | ½ x isisindo x isikwele sejubane (½ mv2) | |||
| Amandla angaba khona | Isisindo x ukusheshisa ngenxa yamandla adonsela phansi x ukuphakama (mgh) | |||
| Momentum | Isisindo x ijubane (mv) | |||
| ishayela | Amandla x isikhathi (F t) | |||
| I-Torsi | Ukufuduka kwe-Force x (F s) | |||
| Amandla kagesi | I-gravitational constant x ishaja 1 x ishaja 2 / isikwele sebanga (kqq / r)2) | |||
| Ukushaja kukagesi | Isikhathi sikagesi x (It) | |||
| Isikhathi sokungalali kahle | Isisindo x irediyasi eyisikwele ( mr2) | |||
| I-Tekanan | Amandla / indawo (F / A) | |||
| Amakhalori | Isisindo x ukushisa okuqondile x ushintsho lokushisa (mc T) | |||
| Amandla kagesi | Amandla kagesi / ishaja kagesi (F / q) |
1. Naka amanani alandelayo!
Ngokusekelwe kuthebula elingenhla, inani elitholiwe elineyunithi yalo efanele kuHlelo Lwamazwe Ngamazwe…
A. (1), (2), kanye (3)
B. (2), (3) kanye no-(4)
C. (2), (4) kanye no-(5)
D. (3), (4) kanye no (5)
Ingxoxo
Ubuningi obuphathekayo iqukethe izinto ezimbili, okungukuthi inani eliyisisekelo kanye nenani elitholwe.
Inani eliyinhloko
Ubuningi obuyisisekelo buyinani elibonakalayo amayunithi alo anqunywe kusengaphambili. Ubuningi obuyisisekelo obuyisi-7 kanye namayunithi awo aphesheya kuboniswe kuthebula elingezansi.
Ubuningi obutholiwe
Ubuningi obutholakalayo buyinani elingokoqobo lapho amayunithi alo atholakala ngobuningi besisekelo. Ngaphezu kwamanani ayisisekelo ayisikhombisa okukhulunywe ngawo ngenhla, kutholakala nezinye izinto ezingokoqobo. Ubuningi obutholakalayo embuzweni ongenhla yivolumu, ijubane, kanye nobuningi.
ivolumu
Ifomula yevolumu (isb. ivolumu ye-cuboid) = ubude x ububanzi x ukuphakama
Ubude buyiyunithi eyisisekelo yobude, ububanzi buyiyunithi eyisisekelo yobude, kanti ukuphakama kuyiyunithi eyisisekelo yobude. Nakuba besebenzisa amagama ahlukene, ubude, ububanzi, nokuphakama kulinganiswa kusetshenziswa ithuluzi elifanayo lokulinganisa, okungukuthi ubude. Ubude, ububanzi, nokuphakama nakho kuneyunithi efanayo yamazwe ngamazwe, okungukuthi imitha. Ngakho-ke, iyunithi yamazwe ngamazwe yomthamo imitha x imitha x imitha = imitha eyi-cubic, efushanisiwe njengo-m.3
I-Kecepatan
Ifomula yesivinini = ukufuduka / isikhathi
Ukususwa kuyinani eliyisisekelo lobude, kanti isikhathi siyinani eliyisisekelo lesikhathi. Iyunithi yamazwe ngamazwe yokufuduka iyimitha, kanti iyunithi yamazwe ngamazwe yesikhathi iyisibili. Ngakho-ke, iyunithi yamazwe ngamazwe yokufuduka iyimitha/yesibili, efingqiwe ngokuthi m/s.
Ubuningi
Ifomula yobuningi = isisindo / ivolumu
Isisindo siyinani eliyisisekelo, futhi ivolumu iyinani elithathwe. Iyunithi yomhlaba wonke yesisindo yikhilogramu, kanti iyunithi yomhlaba wonke yevolumu yimitha eyi-cubic. Ngakho-ke, iyunithi yomhlaba wonke yesisindo yimitha eyi-kilogramu/i-cubic, efingqiwe nge-kg/m3.
Impendulo efanele ngu-C.
2. Bheka ithebula elilandelayo!
Ngokusekelwe kuthebula, inombolo efakiwe eqenjini lenani elithathwe ngamayunithi ku-International System (SI)...
A. (1), (2), kanye (3)
B. (1), (3), kanye (5)
C. (2), (4), kanye no-(5)
D. (3), (4), kanye (5)
Ingxoxo
Ubuningi obuyisisekelo buhlanganisa (1) isisindo kanye (3) ubude. Ubuningi obutholakala buhlanganisa (2) ukuminyana, (4) indawo, (5) i-voltage kagesi.
Ubuningi
Iyunithi yobuningi yi-kilogram/imitha ye-cubic, efingqiwe yi-kg/m3Bheka incazelo engxoxweni yombuzo 1.
Kukhulu
Ifomula yendawo (isb. indawo yesikwele) = ubude x ububanzi.
Ubude buyiyunithi eyisisekelo yobude kanti ububanzi buyiyunithi eyisisekelo yobude. Iyunithi yamazwe ngamazwe yobude iyimitha kanti iyunithi yamazwe ngamazwe yobubanzi iyimitha. Ngakho-ke, iyunithi yamazwe ngamazwe yendawo iyimitha x imitha = imitha eyisikwele, efingqiwe ngo-m.2.
I-voltage kagesi
Iyunithi yamazwe ngamazwe yomehluko we-voltage kagesi noma amandla kagesi yi-Joule / Coulomb. Elinye igama leyunithi yamazwe ngamazwe yomehluko we-voltage kagesi yi-Volt.
Impendulo efanele ngu-C.
3. Ithebula elilandelayo liqukethe amanani amaningana kanye namayunithi awo.
Iqembu lamanani atholwe ngamayunithi awo ohlelweni olufanele lwamazwe ngamazwe liboniswa yizinombolo...
A. (1), (2), kanye (3)
B. (1), (3), kanye (4)
C. (2), (3), kanye no-(5)
D. (3), (4), kanye (5)
Ingxoxo
Ubuningi obuyisisekelo etafuleni yi-(5) Ubukhulu bokukhanya. Ubuningi obutholakala etafuleni yi-(1) ivolumu, (2) ukuminyana, (3) amandla, kanye (4) isivinini.
ivolumu
Iyunithi yomhlaba wonke yevolumu yi-cubic meter, efingqiwe m3Bheka incazelo engxoxweni yombuzo 1.
Ubuningi
Iyunithi yomhlaba wonke yobuningi yi-kilogram/cubic meter, efingqiwe yi-kg/m3. Igremu/cm3 akuyona iyunithi yamazwe ngamazwe. Bheka incazelo engxoxweni yombuzo 1.
I-Gaya
Ifomula yamandla = isisindo x ukusheshisa. Isisindo siyinani eliyisisekelo, futhi ukusheshisa kuyinani elithathwe. Iyunithi yamazwe ngamazwe yesisindo yikhilogramu, i-kj ...2Ngakho-ke iyunithi yamandla yamazwe ngamazwe iyi-kilogram imitha / isekhondi isikwele, efingqiwe kg m/s2Le yunithi inikezwa igama elikhethekile elithi Newton, ukuhlonipha isazi sesayensi u-Isaac Newton.
I-Kecepatan
Iyunithi yejubane yamazwe ngamazwe yimitha/isekhondi, efingqiwe ngo-m/s. Bheka incazelo engxoxweni yombuzo 1.
Impendulo efanele ingu-B.
4. Ngokusekelwe ekuhlaziyweni kobukhulu, amanani angokwenyama angezansi anobukhulu obufanayo…
- umzamo namandla
- amandla kanye nengcindezi
- amandla kanye nomfutho
- umsebenzi nokushisa
Ingxoxo
Kuyaziwa ukuthi:
Ubude besilinganiso Ubukhulu = Ububanzi Ubukhulu = Ukufuduka Ubukhulu = L
Ubukhulu Besikhathi = T
Ubukhulu besisindo = M
Impendulo:
Ubukhulu Bendawo = Ubude Ubukhulu x Ububanzi Ubukhulu = [L][L] = [L]2
Ubukhulu Besivinini = Ubukhulu Bokufuduka / 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 Bobukhulu 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 = Umzamo Ubukhulu / Isikhathi Ubukhulu = [M][L]2[T]-2 / [T] = [M][L]2[T]-2[T]-1 = [M][L]2[T]-3
Ubukhulu Bokucindezela = Ubukhulu Bamandla / Ubukhulu Bendawo = [M][L][T]-2 / [L]2 = [M][L][T]-2 [L]-2 = [M] [L]-1[T]-2
Ubukhulu beMomentum = Ubukhulu beSisi x Ijubane Ubukhulu = [M][L][T]-1
Ubukhulu Bokushisa = Ubukhulu Bamandla = Ubukhulu Bomsebenzi = [M][L]2[T]-2
Impendulo efanele ngu-D.
Catatan:
Ukushisa kungamandla adluliselwa ngenxa yokwehluka kwezinga lokushisa.
Umsebenzi inqubo yokudlulisa amandla ngokuhamba kwezinto.
Ngakho ubukhulu bokushisa = ubukhulu bamandla = ubukhulu bomsebenzi.
