Isibonelo Semibuzo Yobuningi Beyunithi

Izibonelo eziyi-12 zemibuzo yobuningi beyunithi

1. Bheka ithebula elilandelayo!

Isibonelo Semibuzo Yobuningi Beyunithi 1

Kusukela kuthebula elingenhla, leyo enamayunithi nobukhulu obufanele yinombolo...
A. 1 kuphela
B. 1 no-2 kuphela
C. 1, 2 kanye no-3
D. 1 no-3 kuphela
Isigaba 2 no-3 kuphela
Ingxoxo
I-1. Momentum
Ifomula yomfutho ingu-p = mv
Incazelo: p = umfutho, m = isisindo, v = ijubane
Ubukhulu besisindo = M kanye nobukhulu bejubane = L/T = LT-1 ukuze ubukhulu umfutho yi-MLT-1
Iyunithi yamazwe ngamazwe yomfutho yi-kg m/s = kg ms-1

2. Isitayela
Ifomula yamandla ithi F = ma
Incazelo: F = amandla, m = isisindo, a = ukusheshisa
Ubukhulu besisindo = M kanye nobukhulu bokusheshisa = L/T2 = LT-2 ukuze ubukhulu gaya yi-MLT-2
Iyunithi yamandla yamazwe ngamazwe yi-kg m/s2 = kg ms-2

3. Amandla
Ifomula yomsebenzi ithi W = F s
Incazelo: W = umzamo, F = amandla, s = ukufuduka
Ubukhulu bamandla yi-MLT-2 futhi ubukhulu bokufuduka bungu-L ukuze ubukhulu ibhizinisi ngu-[M][L][T]-2 [L] = [M][L]2[T]-2

Ifomula yamandla yi-P = W / t
Incazelo: P = amandla, W = umsebenzi, t = isikhathi
Ubukhulu bebhizinisi buyi-[M][L]2[T]-2 futhi ubukhulu besikhathi bungu-[T] ngakho ubukhulu bamandla bungu-[M][L]2[T]-2 / [T] = [M][L]2[T]-2 [T]-1 = [M][L]2[T]-3
Iyunithi yamandla yamazwe ngamazwe yi-kg m2/s3 = kg m2 s-3
Impendulo efanele ingu-B.

2. Bheka ithebula elilandelayo!
Kusukela etafuleni elinamayunithi nobukhulu obufanele, inombolo yobuningi...
A. 1 kuphelaIsibonelo Semibuzo Yobuningi Beyunithi 2
B. 1 no-2 kuphela
C. 1, 2 kanye no-3
D. 1 no-3 kuphela
Isigaba 2 no-3 kuphela
Ingxoxo
Ifomula ye-momentum i-p = m v.
Isisindo (m) sinamayunithi angamakhilogremu (kg) kanti ijubane (v) linamayunithi amamitha ngomzuzwana (m/s) ngakho amayunithi omfutho angama-kg m/s noma kg ms-1Ikhilogram iyiyunithi yobunzima enobukhulu [M], imitha iyiyunithi yobude enobukhulu [L], okwesibili iyiyunithi yesikhathi enobukhulu [T] ngakho ubukhulu bomfutho buyi [M][L]/[T] noma [M][L][T]-1.

Ifomula yamandla ithi F = m a.
Isisindo (m) sinamayunithi angamakhilogremu (kg) kanti ukusheshisa (a) sinamayunithi amamitha ngomzuzwana oyisikwele (m/s).2) ngakho-ke iyunithi yamandla yi-kg m/s2 noma kg ms-2Ikhilogram iyiyunithi yobunzima enobukhulu [M], imitha iyiyunithi yobude enobukhulu [L], okwesibili iyiyunithi yesikhathi enobukhulu [T] ngakho ubukhulu bamandla buyi [M][L]/[T]2 noma [M][L][T]-2

FUNDA FUTHI  Imibuzo Eyisibonelo Ekhuluma Ngemisebe Yemisebe Ye-Gamma (γ)

Ifomula yamandla ingu-P = W/t, ifomula yomsebenzi ingu-W = F s, ifomula yamandla ingu-F = m a.
Iyunithi yobunzima yikhilogremu (kg), iyunithi yokusheshisa iyimitha ngomzuzwana isikwele (m/s).2) ngakho-ke iyunithi yamandla yi-kg m/s2Iyunithi yokufuduka iyimitha (m), iyunithi yamandla yi-kg m/s2 ngakho-ke iyunithi yomsebenzi ingu-kg m/s2 xm = kg m2/s2Iyunithi yesikhathi imizuzwana (s), iyunithi yomsebenzi ingama-kg m2/s2 ngakho-ke iyunithi yamandla yi-kg m2/s2 : s = kg m2/s3 noma kg m2 s-3.
Ikhilogram iyiyunithi yobunzima enobukhulu [M], imitha iyiyunithi yobude enobukhulu [L], okwesibili iyiyunithi yesikhathi enobukhulu [T] ngakho ubukhulu bamandla buyi [M][L]2/[T]3 noma [M][L]2[T]-3.
Impendulo efanele ingu-B.

3. Kumanani angokoqobo angezansi, inani eliyisisekelo lithi…..
A. isisindo, isisindo, ibanga, amandla
B. ubude, amandla, umfutho, isivinini
C. amandla wamanje, inani lezinto, izinga lokushisa, ibanga
D. isikhathi, amandla, ukusheshisa, ingcindezi
E. umzamo, ukuqina kokukhanya, amandla adonsela phansi, amandla avamile
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Ibanga = ubude
Impendulo efanele ngu-C.

4. Amandla yinani lomsebenzi noma amandla ngeyunithi yesikhathi, ubukhulu bamandla...
A. MLT
B. MLT-1
C. MLT-2
D. M L2 T-2
E. M L2 TIsibonelo Semibuzo Yobuningi Beyunithi 3
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Ifomula yamandla:

Isibonelo Semibuzo Yobuningi Beyunithi 4

Imininingwane:
W = umsebenzi, F = amandla, a = ukusheshisa, v = isivinini, s = ibanga, t = isikhathi.
m = isisindo (ubukhulu besisindo = M), s = ibanga (ubukhulu bebanga = L), t = isikhathi (ubukhulu besikhathi = T).
Ngakho-ke ubukhulu bamandla yilobu:

Isibonelo Semibuzo Yobuningi Beyunithi 5

Impendulo efanele ngu-E.

5. Bheka ithebula lemiphumela yokulinganisa yabafundi abane mayelana nobuningi obubonakalayo kanje!
Ingxoxo ngoHlelo Lukazwelonke Lokuhlolwa Kwefiziksi Yesikole Samabanga Aphansi Esisezingeni Lesifunda/Idolobha – Ubuningi, amayunithi, ubukhulu, izilinganiso kanye nezibalo ezibalulekile 1Idatha esetafuleni ilungile futhi isekelwe kumayunithi e-SI (International System) anikezwe abafundi...

  1. R kanye no-S
  2. P kanye no-R
  3. P kanye no-Q
  4. Imibuzo kanye no-S

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Umfundi P:
I-International System of Units (SI) yobude yimitha (m), hhayi isentimitha (cm).
Ithuluzi lokulinganisa ubude liyirula.
Umbuzo Womfundi:
Uhlelo Lwamazwe Ngamazwe Lwamayunithi (SI) lwamandla kagesi yi-Ampere (A)
Ithuluzi elisetshenziswa ukukala ugesi yi-ammeter.
Umfundi R:
Uhlelo Lwamazwe Ngamazwe Lwamayunithi (SI) lokushisa yiKelvin (K)
Ithuluzi elisetshenziswa ukukala izinga lokushisa yi-thermometer, hhayi i-hydrometer.
I-hydrometer iyithuluzi lokulinganisa ubukhulu bamanzi.
Umfundi S:
Uhlelo Lwamazwe Ngamazwe Lweziyunithi (SI) lwesisindo yikhilogramu (Kg).
Ithuluzi lokulinganisa isisindo liyibhalansi elinganayo yengalo.

FUNDA FUTHI  Amandla kagesi

Idatha esetafuleni ilungile futhi isekelwe kumayunithi e-SI (International System) anikezwe abafundi be-Q no-S.
Impendulo efanele ngu-D.

6. Ubudlelwano obufanele phakathi kobuningi namayunithi bungu….
Isibonelo Semibuzo Yobuningi Beyunithi 7Ingxoxo
Amandla = Isisindo x Ukusheshisa
Iyunithi ye-SI yobunzima yi-kilogram (kg)
Iyunithi ye-SI yokusheshisa iyimitha ngomzuzwana oyisikwele (m/s)2)
Ngakho iyunithi yamandla = kg m/s2 = kg ms-2

Ukucindezela = Amandla / Indawo Yomphezulu
Iyunithi yamandla ye-SI yi-kg m/s2
Iyunithi ye-SI yendawo engaphezulu i-m2
Ngakho iyunithi yokucindezela = kg / ms2 = kg m-1 s-2

Amandla = Umsebenzi
Umsebenzi = Amandla x Ukufuduka
Iyunithi yamandla ye-SI yimitha yekhilogramu ngomzuzwana oyisikwele (kg m/s)2)
Iyunithi ye-SI yokufuduka yimitha (m)
Ngakho iyunithi yamandla = iyunithi yomsebenzi = kg m2/s2 = kg m2 s-2

Amandla = Umsebenzi / Isikhathi
Iyunithi yomsebenzi ye-SI ingama-kilogram amamitha ayisikwele ngomzuzwana (kg m)2/s2)
Iyunithi ye-SI yesikhathi yi-second (s)
Ngakho iyunithi yamandla = kg m2/s3 = kg m2 s-3
Impendulo efanele ngu-D.

7. Uhhafu welitha lobisi olusha luyadingeka njengesithako sesosi ye-pudding, ngakho-ke inani lobisi okumele lifakwe ezithakweni zesosi ye-pudding….

  1. 5000 ml
  2. I-500 cc
  3. awu 50dm3
  4. 5 m3

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Kuyaziwa ukuthi:
Umthamo wobisi = 0,5 amalitha
Umbuzo: 0,5 amalitha = ….. ml = ….. cm3 (cc) = ….. dm3 = ….. m3
Impendulo:
Ilitha eli-1 = amamililitha ayi-1000 (1000 ml)
Ilitha eli-1 = 0,001 m3 = 1 dm3 = 1000cm3 (1000 cc)

0,5 ilitha = (0,5)(1000 ml) = 500 ml
awu 0,5dm3 = (0,5)(1000 cc) = 500 cc
Ilitha eli-0,5 = 0,5 dm3 = 0,0005m3
Impendulo efanele ingu-B.

8. Uma amanzi angu-250 cc engezwa kumamililitha ayi-100 obisi oluwuketshezi, ubisi oluzophuma luzoba….

  1. awu 12,5dm3
  2. awu 1,25dm3
  3. awu 3,5dm3
  4. awu 0,35dm3

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Kuyaziwa ukuthi:
Umthamo wobisi = 100 ml
Umthamo wamanzi = 250 cc = 250 cm3
Umbuzo: 100 ml + 250 cc = ….. dm3
Impendulo:
ml = mililitha
cc = cm3 = amasentimitha ayi-cubic
dm3 = i-cubic decimeter

awu 1dm3 = Ilitha eli-1 = amamililitha ayi-1000 ngakho amamililitha ayi-100 = amalitha ayi-100/1000 = ilitha eli-1/10 = ilitha eli-0,1 = 0,1 dm3
awu 1dm3 = 1000cm3 kufika ku-250 cm3 = 250/1000 dm3 = 1/4 dm3 = 0,25 dm3

FUNDA FUTHI  Isampula Semibuzo Yokuxoxisana

100 ml + 250 cm3 = 0,1 dm3 + 0,25 dm3 = 0,35 dm3
Impendulo efanele ngu-D.

9. Igumbi lokufundela elingamamitha ayi-10 ubude kanye nobubanzi obungamamitha ayi-8 linephansi le-ceramic elingama-20 cm x 20 cm. Inani lamathayela e-ceramic phansi egumbini lingu….

  1. 20 izingcezu
  2. 200 izingcezu
  3. 2000 izingcezu
  4. 20000 izingcezu

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Kuyaziwa ukuthi:
Usayizi wekilasi:
Ubude = 10 amamitha
Ububanzi = amamitha angu-8
Indawo yekilasi = 10 m x 8 m = 80 m2

Usayizi we-Ceramic:
Ubude = 20 cm
Ububanzi = 20 cm
Indawo ye-ceramic = 20 cm x 20 cm = 400 cm2

Umbuzo: Inani lamathayela phansi ekamelweni
Impendulo:
1 m = 100 cm
1 m2 = 10.000cm2
Ngakho-ke 80 m2 = 80 x 10.000 cm2 = 800.000cm2

Inani lamathayela = Indawo yekilasi / Indawo yamathayela
Inani lezinto zobumba = 800.000 cm2 400cm2
Inani lezinto zobumba = izingcezu ezingu-2000
Impendulo efanele ngu-C.

10. Njalo ngomzuzwana, amaconsi amanzi angu-4 cc avela e-aquarium evuzayo. Amaconsi amanzi aqoqwa ebhakedeni elingamalitha ama-5. Ibhakede ligcwala ngaphakathi….

  1. 125 idethi
  2. 200 idethi
  3. 1250 idethi
  4. 2000 idethi

Ingxoxo
Kuyaziwa ukuthi:
Ilitha eli-1 = 1 dm3 = 1000cm3

Umthamo wamanzi = 4 cc = 4 cm3
Umthamo webhakede = amalitha ama-5 = 5 dm3 = 5 x 1000 cm3 = 5000cm3   
Umbuzo: Kuthatha isikhathi esingakanani ukuthi ibhakede ligcwale?
Impendulo:
5000 cm3 4cm3 = imizuzwana eyi-1250
Impendulo efanele ngu-C.

11. Ukuhleleka okufanele kweziqalo zamayunithi kusukela kwelikhulu kuya kwelincane ngu….

  1. I-Mega, i-terra, i-nano, i-pico
  2. Giga, Mega, Micro, Nano
  3. I-Piko, i-Nano, i-Mega, i-Terra
  4. I-Mega, i-Terra, i-Micro, i-Piko

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Isibonelo Semibuzo Yobuningi Beyunithi 8Impendulo efanele ingu-B.

12. Ubukhulu namayunithiIsibonelo Semibuzo Yobuningi Beyunithi 9

Naka ithebula elilandelayo!

Ngokusekelwe kuthebula elingenhla, amaqembu enani elitholiwe kanye namayunithi awo kuHlelo Lwamazwe Ngamazwe aboniswa ngezinombolo...

A. (1), (2), kanye (3)

B. (1), (4), kanye (5)

C. (2), (3), kanye no-(4)

D. (3), (4), kanye (5)

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(1) Ubuningi obutholiwe

(2) Inani eliyinhloko

(3) Inani eliyinhloko

(4) Ubuningi obutholiwe

(5) Ubuningi obutholiwe

Impendulo efanele ingu-B.

 

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