# 化學內容....英翻中..(請勿用翻譯軟體)..詳細者佳

Measure the dimension of the bar with a measuring stick ruled in

centimeters. Repeat these measurements twice. Calculate the volume of

the bar from these dimensions. Because the bar is cylindrical in shape,

note that the formula for the volume of a cylinder shouldbe used

(Ｖ＝πr^2h). Calculate the average density of the bar.

For each method, determine the relative error of your result comparing

it with the accepted value as provided by your instructor or as found

in a reference such as the Handbook of Chemistry and Physics.Which

one of the two method is more accurate?Explain.

### 1 個解答

• 1 0 年前
最佳解答

用一根有公分刻度的測量尺測量酒吧(桿子)的長度.

重複測量2次.

利用測出來的長度計算酒吧(桿子)的容積.

由於酒吧(桿子)的外型是圓柱狀,注意圓柱體的公式是(Ｖ＝πr^2h).

計算出酒吧(桿子)的平均密度.

針對每種方法, 比較你的計算結果和你的老師給的正確答案或Chemistry and Physics課本裡的參考資料的相對誤差.

這兩個方法之中哪一個比較正確? 請解釋

P.S.

1.原諒我中文文法有點爛>"<

2.你的Bar到底是酒吧還是桿子 自己看題目吧

參考資料： 自己
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