【高中阶段关于电势能和电势的公式】-查字典问答网
苏韬
库仑定律:F=kQq/r²
电场强度:E=F/q
点电荷电场强度:E=kQ/r²
匀强电场:E=U/d
电势能:E₁=qφ
静电力做功:W₁₂=qU₁₂
全电路欧姆定律:ε=I(R+r)
安培力:F=ILBsinθ
- 【(1)如图1,平面直角坐标系中,已知点A(1,3)和点B(6,2),在x轴上找到一点P,使△ABP的周长最小;并写出点P的坐标.(2)图2图象反映的过程是:张强从家跑步去体育场,在那里锻炼】
- 公园里要在一个边长是5米的正方形水池四周每隔1米栽一棵树,一共要栽多少棵
- 英语翻译AdaytoplaySomedaysagp,millionsofkidsturnedontheirtelevisionstowatchtheNicklodeonchannel,onlytofindthattheirfavoriteshowswentofftheair.Instead,amessageonTVtoldthemthatitwastheWorldwideDayofPlay.Instea
- Hello,everyone.Mynameis///.I'mtwelveyearsold.IamaMiddleschoolstudent.IwasborninPanjin,Itisanbeautifulcity.NowIstudyinBohaiNo.1MiddleSchool.I'minClassThree,GradeTwo.Therearethirteen-fivestudentsinourclass.Wehavef
- 12.Theoldmanusuallyleaveshishouseat8inthemorning.13.Hewantstojointhe12.Theoldmanusuallyleaveshishouseat8inthemorning.13.Hewantstojointhechessclub.14.Lucycanplaybasketballandvolleyball.15.Shelikesvegetablesforb
- 有一条绳子长107米,把它剪成每段3米的短绳,全部剪完,一共要剪()次.
- 英语翻译SelfalittleWellithoughtyouwere最长一段pleasevera,amsorrybutican'trememberyou.pieasecanyouhelpmeremeberyouormaybeyoucanintroduceyour.啥意思?
- 氧化钙生成硝酸钙的化学反应呢
- 生气的英语单词是什么
- 【请英语高手用bomb(炸弹)、comb(梳子)和tomb(坟墓)帮忙造句,急用,用bomb(炸弹)、comb(梳子)和tomb(坟墓)帮忙造句,造得好,100分就是伱的了,希望加油,我就是怎麼都想不通如何把3个词】