Ubuningi namayunithi efiziksi - izinkinga nezixazululo

1.

Iyunithi Yamazwe Ngamazwe Elungile eboniswe ngumfundi…

A. R kanye no-S

B. P kanye no-R

C. P no-Q

D. Q no-S

Isixazululo

Umfundi P:

Iyunithi yamazwe ngamazwe yobude imitha (m), hhayi isentimitha (cm)

Ithuluzi lokulinganisa ubude yirula.

Umbuzo Womfundi:

Iyunithi yamandla kagesi yamazwe ngamazwe yi-Ampere (A)

Ithuluzi lokulinganisa lamandla kagesi yi-Ampere meter.

Umfundi R:

Iyunithi yomhlaba wonke yokushisa yiKelvin (K)

Ithuluzi lokulinganisa izinga lokushisa yi-thermometer, hhayi i-hydrometer.

I-hydrometer iyithuluzi elisetshenziselwa ukulinganisa ubuningi boketshezi olusekelwe emcabangweni wokuntanta.

Umfundi S:

Iyunithi yomhlaba wonke (SI) yobunzima yi-kilogram (Kg)

Ithuluzi lokulinganisa isisindo liyisikali sokulinganisela

Idatha efanele futhi isekelwe kuyunithi ye-SI (iYunithi Yomhlaba Wonke) eboniswe umfundi Q no-S.

Impendulo efanele ngu-D.

2. Thola ubudlelwano obufanele phakathi kobuningi namayunithi.

Isixazululo

Amandla = Isisindo x Ukusheshisa

Iyunithi yomhlaba wonke yobunzima yi-kilogram (kg)

Iyunithi yamazwe ngamazwe yokusheshisa iyimitha ngomzuzwana oyisikwele (m/s ² )

Iyunithi yamandla = kg m/s ² = kg ms ^-2

Ukucindezela = amandla / indawo

Iyunithi yamandla yamazwe ngamazwe yi-kg m/s ²

Iyunithi yomhlaba wonke yendawo ingu- ^m2

Iyunithi yokucindezela = kg /ms ² = kg m ^-1 s ^-2

Amandla = Umsebenzi

Umsebenzi = amandla x ukufuduka

Iyunithi yamandla yamazwe ngamazwe iyi-kilogram imitha ngomzuzwana isikwele (kg m/s ² )

Iyunithi yamazwe ngamazwe yokufuduka iyimitha (m)

Iyunithi yamandla = iyunithi yomsebenzi= kg m ² /s ² = kg m ² s ^-2

Amandla = Umsebenzi / isikhathi

Iyunithi yomsebenzi yamazwe ngamazwe iyi-kilogram imitha eyisikwele ngomzuzwana eyisikwele (kg ^m2 / ^s2 )

Iyunithi yesikhathi yamazwe ngamazwe ingeyesibili (s)

Iyunithi yamandla yi-kg m ² /s ³ = kg m ² s ^-3

Impendulo efanele ngu-D.

3.

Ngokusekelwe kuthebula elingenhla, thola u-A, B, C, D, kanye no-E.

A. Umthamo, ikhilogremu, izinga lokushisa, indawo, imitha

B. Ubude, ikhilogremu, isikhathi, indawo, iNewton

C. Ubude, ikhilogremu, ivolumu, indawo, iJoule

D. Ubude, iNewton, isikhathi, ivolumu, imitha

Isixazululo:

A = Ubude

B = Ikhilogram

C = Isikhathi

D = Indawo

E = Kg m/s ² = Newton

Impendulo efanele ngu-B.

4. Thola umbhangqwana wezilinganiso eziyisisekelo namayunithi kuhlelo lwamazwe ngamazwe.

A. Ubude– imitha, isisindo – kg kanye nokushaja kagesi—coulomb

B. Isikhathi – okwesibili, izinga lokushisa – uKelvin, ukuqina okukhanyayo—uCandela

C. Okwesibili – isikhathi, imitha – ubude, kg—isisindo

D. isisindo – kg, isikhathi – isekhondi, uKelvin – izinga lokushisa

Isixazululo

Ubuningi obuyisisekelo kanye namayunithi omhlaba wonke (SI):

Ubude - imitha (m)

IMisa - ikhilogremu (kg)

Isikhathi - amasekhondi

Izinga lokushisa – Kelvin (K)

Ukukhanya okukhulu—iCandela

Impendulo efanele ngu-B.

5.

Ubuningi obufanele kanye namayunithi asekelwe ku-International System of Units (SI) eboniswe ngenombolo…

A. 1 no-3

B. 1 kanye no-4

C. 1, 2, kanye no-3

D. 1, 3, kanye no-4

Isixazululo

Ubuningi namayunithi eSistimu Yomhlaba Wonke (SI):

(1) Izinga lokushisa – uKelvin

(2) Isisindo – Ikhilogram

(3) Isikhathi – Okwesibili

(4) Ubude – Imitha

Impendulo efanele ngu-D.