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範例:力學能與熱能之轉換[79日大]

高空下落的雨滴,因受到空氣阻力,落地前會以等速下降。一雨滴的質量為2.7×10-7公斤,落地前以等速度20公尺/秒下降,設在此等速運動期間,雨滴受空氣阻力產生之熱量全部被雨滴吸收,且雨滴之質量保持不變,則此雨滴每秒溫度約升高幾度?【79日大】


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Posted in 歷屆物理考題, 熱的本質與熱功當量.

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By admin – 2009 年 06 月 17 日

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