[好奇] 如何求得麵包體積
今天在上國二的理化,老師講到如何求體積(排水法)
又說了如果是食鹽等會溶解的東西要用飽和溶液
我想:要怎麼求麵包體積?
它又會吸水,
又不能配置「麵包」飽和溶液(笑)
回家後,老爸說塗蠟 可是我說麵包會吸
他又說用塑膠袋包,再扣掉塑膠袋體積
我就問:那你怎麼在軟軟的麵包上包塑膠袋 不捏扁也不會包到空氣
他說:那你就用熱塑的塑膠袋 再用吹風機吹嘛......
可是縮起來的塑膠袋體積又和原本不同
怎麼會準
還是說它加熱後體積不變?
所以要如何求出麵包的體積?
還是說一定沒辦法求出?
希望物理板上的高手能為我解答!
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