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7.有一質量20Kg的物體受到10N的外力作用,沿光滑平面向右移動10m,其受力情形如圖,此外力作功多少焦耳?(A)80 (B)100 (C)160 (D)200。
問題詳情
7.有一質量20Kg的物體受到10N的外力作用,沿光滑平面向右移動10m,其受力情形如圖,此外力作功多少焦耳?
(A)80
(B)100
(C)160
(D)200。
參考答案
上一篇 :
12.( )由右表為臺中連續四天的氣溫、氣壓值紀錄,可知臺中天氣受何種天氣系統影響?(A)梅雨 (B)颱風 (C)寒潮 (D)西南氣流。
下一篇 :
33.柏軒身高1.7公尺站在平面鏡前2.0公尺處,他向鏡子前進1.0公尺,此時他看到鏡內時鐘指著3時15分, 則以下敘述何者正確? (A)鏡長至少要1.7公尺才能看到全身 (B)前進的過程中,像的高度
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