体积为30cm²,质量是178g的铜球,已知铜的密度为8.9*10³Kg/cm³1、实心还是空心?空心体积(我算出来是负的--||)2、若是空心,在空心部分灌满铝,则铝的质量多大(密度=2.7g/cm³)
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![体积为30cm²,质量是178g的铜球,已知铜的密度为8.9*10³Kg/cm³1、实心还是空心?空心体积(我算出来是负的--||)2、若是空心,在空心部分灌满铝,则铝的质量多大(密度=2.7g/cm³)](/uploads/image/z/509665-49-5.jpg?t=%E4%BD%93%E7%A7%AF%E4%B8%BA30cm%26%23178%3B%2C%E8%B4%A8%E9%87%8F%E6%98%AF178g%E7%9A%84%E9%93%9C%E7%90%83%2C%E5%B7%B2%E7%9F%A5%E9%93%9C%E7%9A%84%E5%AF%86%E5%BA%A6%E4%B8%BA8.9%2A10%26%23179%3BKg%2Fcm%26%23179%3B1%E3%80%81%E5%AE%9E%E5%BF%83%E8%BF%98%E6%98%AF%E7%A9%BA%E5%BF%83%3F%E7%A9%BA%E5%BF%83%E4%BD%93%E7%A7%AF%EF%BC%88%E6%88%91%E7%AE%97%E5%87%BA%E6%9D%A5%E6%98%AF%E8%B4%9F%E7%9A%84--%7C%7C%EF%BC%892%E3%80%81%E8%8B%A5%E6%98%AF%E7%A9%BA%E5%BF%83%2C%E5%9C%A8%E7%A9%BA%E5%BF%83%E9%83%A8%E5%88%86%E7%81%8C%E6%BB%A1%E9%93%9D%2C%E5%88%99%E9%93%9D%E7%9A%84%E8%B4%A8%E9%87%8F%E5%A4%9A%E5%A4%A7%EF%BC%88%E5%AF%86%E5%BA%A6%3D2.7g%2Fcm%26%23179%3B%EF%BC%89)
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