Physics: Energy Resources And Energy Transfers: Units
Gbogbo ọrọ náà
Energy is the currency of physics, and like any currency it needs a unit before the numbers mean anything. The energy section leans on eight of them, and they are not eight unrelated facts: each one is built from the others in a way that you can reconstruct rather than memorise.
This lesson sets out the kilogram, joule, metre, metre per second, metre per second squared, newton, second and watt. You will see how the joule grows out of the newton, how the watt grows out of the joule, and how tracking units through a calculation catches a wrong answer before the examiner does.
Ebumnobi
- Use the following units: kilogram (kg), joule (J), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s) and watt (W)
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Physics: Energy Resources And Energy Transfers: Units. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- The SI unit of energy is the: A) newton B) watt C) joule D) kilogram Answer: C
- One watt is equal to: A) 1 joule B) 1 joule per second C) 1 newton metre D) 1 newton per second Answer: B
- Which of these has no unit? A) Power B) Work done C) Efficiency D) Weight Answer: C
- A force of 20 N moves an object 4 m in the direction of the force. The work done is: A) 5 J B) 16 J C) 24 J D) 80 J Answer: D
- 3.0 kW expressed in watts is: A) 3 W B) 30 W C) 300 W D) 3000 W Answer: D
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Physics: Energy Resources And Energy Transfers: Units? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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