標題:
發問:
Gold,which has a density of 19.32 g/cm3,is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. 黃金，擁有密度19.32 g/cm3，是最韌性金屬材料，可壓成薄葉或抽出到長纖維。 (a)if a sample of gold,with a mass of 27.63g, is pressed into a leaf of 1.000 thickness,what is the area of the leaf? (a)... 顯示更多 Gold,which has a density of 19.32 g/cm3,is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. 黃金，擁有密度19.32 g/cm3，是最韌性金屬材料，可壓成薄葉或抽出到長纖維。 (a)if a sample of gold,with a mass of 27.63g, is pressed into a leaf of 1.000 thickness,what is the area of the leaf? (a) 如果樣本的黃金，以大規模27.63克，被壓入的1.000葉厚度，什麼是該面積的葉？ (b)if,instead,the gold is drawn out into a cylindrical fiber of radius 2.500 micrometer,what is the length of the fiber? (b)相反，如果黃金是抽出成一個圓柱形纖維的半徑2.500微米，什麼是纖維黃金的長度？
最佳解答:
(a)、∵黃金體積＝１／19.32 g/cm3＊27.63g＝27.63／19.32＝1.430㎝3 ∴黃金面積＝1.430／1.000＝1.430㎝2 (b)、∵2.500 micrometer＝0.00025㎝ 圓柱體體積＝3.14159*0.00025*0.00025*高＝1.963(10的負7次方)*高 ∴黃金纖維的長度＝(1.430)㎝31.963(10的負7次方)㎝2 ＝7.285(10的6次方)㎝＝72850 M 2009-10-11 19:02:34 補充： 數學除號不見了?改為: ∴黃金纖維的長度＝(1.430)㎝3／1.963×(10的負7次方)㎝2
其他解答:8758B59A7FA1EEA7
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大一物理(測量)發問:
Gold,which has a density of 19.32 g/cm3,is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. 黃金，擁有密度19.32 g/cm3，是最韌性金屬材料，可壓成薄葉或抽出到長纖維。 (a)if a sample of gold,with a mass of 27.63g, is pressed into a leaf of 1.000 thickness,what is the area of the leaf? (a)... 顯示更多 Gold,which has a density of 19.32 g/cm3,is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. 黃金，擁有密度19.32 g/cm3，是最韌性金屬材料，可壓成薄葉或抽出到長纖維。 (a)if a sample of gold,with a mass of 27.63g, is pressed into a leaf of 1.000 thickness,what is the area of the leaf? (a) 如果樣本的黃金，以大規模27.63克，被壓入的1.000葉厚度，什麼是該面積的葉？ (b)if,instead,the gold is drawn out into a cylindrical fiber of radius 2.500 micrometer,what is the length of the fiber? (b)相反，如果黃金是抽出成一個圓柱形纖維的半徑2.500微米，什麼是纖維黃金的長度？
最佳解答:
(a)、∵黃金體積＝１／19.32 g/cm3＊27.63g＝27.63／19.32＝1.430㎝3 ∴黃金面積＝1.430／1.000＝1.430㎝2 (b)、∵2.500 micrometer＝0.00025㎝ 圓柱體體積＝3.14159*0.00025*0.00025*高＝1.963(10的負7次方)*高 ∴黃金纖維的長度＝(1.430)㎝31.963(10的負7次方)㎝2 ＝7.285(10的6次方)㎝＝72850 M 2009-10-11 19:02:34 補充： 數學除號不見了?改為: ∴黃金纖維的長度＝(1.430)㎝3／1.963×(10的負7次方)㎝2
其他解答:8758B59A7FA1EEA7
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