一石块用弹簧测力计在空气中称重4.2N,当把它完全浸没在水中称为2.7N (1)该石块的密度;(2)如将该?A一石块用弹簧测力计在空气中称重4.2N,当把它完全浸没在水中称为2.7N(g取 10N/kg),求: (1
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![一石块用弹簧测力计在空气中称重4.2N,当把它完全浸没在水中称为2.7N (1)该石块的密度;(2)如将该?A一石块用弹簧测力计在空气中称重4.2N,当把它完全浸没在水中称为2.7N(g取 10N/kg),求: (1](/uploads/image/z/8238966-6-6.jpg?t=%E4%B8%80%E7%9F%B3%E5%9D%97%E7%94%A8%E5%BC%B9%E7%B0%A7%E6%B5%8B%E5%8A%9B%E8%AE%A1%E5%9C%A8%E7%A9%BA%E6%B0%94%E4%B8%AD%E7%A7%B0%E9%87%8D4.2N%2C%E5%BD%93%E6%8A%8A%E5%AE%83%E5%AE%8C%E5%85%A8%E6%B5%B8%E6%B2%A1%E5%9C%A8%E6%B0%B4%E4%B8%AD%E7%A7%B0%E4%B8%BA2.7N+%281%29%E8%AF%A5%E7%9F%B3%E5%9D%97%E7%9A%84%E5%AF%86%E5%BA%A6%3B%282%29%E5%A6%82%E5%B0%86%E8%AF%A5%3FA%E4%B8%80%E7%9F%B3%E5%9D%97%E7%94%A8%E5%BC%B9%E7%B0%A7%E6%B5%8B%E5%8A%9B%E8%AE%A1%E5%9C%A8%E7%A9%BA%E6%B0%94%E4%B8%AD%E7%A7%B0%E9%87%8D4%EF%BC%8E2N%2C%E5%BD%93%E6%8A%8A%E5%AE%83%E5%AE%8C%E5%85%A8%E6%B5%B8%E6%B2%A1%E5%9C%A8%E6%B0%B4%E4%B8%AD%E7%A7%B0%E4%B8%BA2%EF%BC%8E7N%28g%E5%8F%96+++10N%EF%BC%8Fkg%29%2C%E6%B1%82%EF%BC%9A+++%281)
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