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Electricity Basics 𝑉 = 𝐼𝑅,𝑉 = 𝐼!𝑅𝑃 = 𝑉𝐼, 𝐽𝑠!!
𝐸 = 𝑃𝑡 = 𝑉𝐼𝑡 = 𝑉 ∙ 𝐶𝑜𝑢𝑙𝑜𝑚𝑏𝑠 𝑡𝑟𝑎𝑛𝑠𝑓𝑒𝑟𝑒𝑑Transformers 𝑉!
𝑉!=𝑁!𝑁!
𝑉!𝐼! = 𝑉!𝐼!ForcesandMotion
SUVAT 𝑣 = 𝑢 + 𝑎𝑡𝑣! = 𝑢! + 2𝑎𝑠
𝑠 =𝑢 + 𝑣2 𝑡
𝑠 = 𝑢𝑡 +12𝑎𝑡
!Newton’sSecondLaw 𝑓 = 𝑚𝑎
Momentum 𝑀𝑜𝑚𝑒𝑛𝑡𝑢𝑚 (𝑘𝑔 𝑚𝑠!!) = 𝑚𝑎𝑠𝑠 ∙ 𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦𝑐ℎ𝑎𝑛𝑔𝑒 𝑠!! =
𝑚𝑣 −𝑚𝑢𝑡 = 𝑚 𝑎 = 𝑓𝑜𝑟𝑐𝑒
Weight 𝑤 = 𝑚𝑔WorkDone 𝑊𝐷 = 𝑓 ∙ 𝑑Power 𝑃 =
𝑊𝐷𝑡𝑖𝑚𝑒 =𝑊𝑎𝑡𝑡𝑠 = 𝐽𝑠!!
GPE 𝑚𝑔ℎKE 1
2𝑚𝑣!
Percentageefficiency 𝑢𝑠𝑒𝑓𝑢𝑙 𝑜𝑢𝑡𝑝𝑢𝑡𝑖𝑛𝑝𝑢𝑡 ∙ 100%
ThermalPhysics
Density 𝑀𝑎𝑠𝑠𝑣𝑜𝑙𝑢𝑚𝑒 =
𝑘𝑔𝑚!
Waves WaveNature 𝑣 = 𝑓𝜆
𝐹𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦 𝐻𝑧 =1
𝑡𝑖𝑚𝑒 𝑓𝑜𝑟 𝑜𝑛𝑒 𝑜𝑠𝑐𝑖𝑙𝑙𝑎𝑡𝑖𝑜𝑛
𝐸 = ℎ𝑓,wherehisplank’sconstant(6.63 ∙10!!")