A2 Physics 物理出国英语Work Energy and Power Part 3 - Power and efficiency.ppt

基本信息

文件名称：A2 Physics 物理出国英语Work Energy and Power Part 3 - Power and efficiency.ppt

文件大小：2.23 MB

总页数：8 页

更新时间：2025-08-16

总字数：约1.66千字

文档摘要

Whatispower?Poweristherateatwhichworkisdone,ortherateatwhichenergyistransferred.Where:power=workdone/timetakenP=W/tpowerismeasuredinwatts(W)workdoneorenergytransferredismeasuredinjoules(J)timeismeasuredinseconds(s).

Power:examplequestion1Acra