Physics: Energy Resources And Energy Transfers: Units
Muhtasari
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.
Malengo
- 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)
Maelezo ya Somo
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Physics: Energy Resources And Energy Transfers: Units. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- 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
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Physics: Energy Resources And Energy Transfers: Units? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
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