語文版中職英語拓展模塊unit8generalscience2-在線瀏覽
2025-01-21 08:36本頁面
【正文】 ng done. Power = t i m e t ak e nw or k do ne1watt If a person or a machine is doing 1J of work each second ,the power rating is 1 W. Example Go on looking at the athlete, if the work takes the athlete to lift the weights above his head, what is the power of the athlete? Power= sJ4 0 0 0=8000Wor 8Kw Sum u
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