1.一个体积为60m4的氦气球,所受到向上的浮力的大小为多少牛?(空气密度为1.29kg\m3,g取10N\kg)2.一物体没入水中所受的浮力是50牛,没入酒精中受到的浮力是多大?(酒精密度为0.8g\cm3,g取10N\kg)3.
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![1.一个体积为60m4的氦气球,所受到向上的浮力的大小为多少牛?(空气密度为1.29kg\m3,g取10N\kg)2.一物体没入水中所受的浮力是50牛,没入酒精中受到的浮力是多大?(酒精密度为0.8g\cm3,g取10N\kg)3.](/uploads/image/z/80672-32-2.jpg?t=1.%E4%B8%80%E4%B8%AA%E4%BD%93%E7%A7%AF%E4%B8%BA60m4%E7%9A%84%E6%B0%A6%E6%B0%94%E7%90%83%2C%E6%89%80%E5%8F%97%E5%88%B0%E5%90%91%E4%B8%8A%E7%9A%84%E6%B5%AE%E5%8A%9B%E7%9A%84%E5%A4%A7%E5%B0%8F%E4%B8%BA%E5%A4%9A%E5%B0%91%E7%89%9B%3F%EF%BC%88%E7%A9%BA%E6%B0%94%E5%AF%86%E5%BA%A6%E4%B8%BA1.29kg%5Cm3%2Cg%E5%8F%9610N%5Ckg%EF%BC%892.%E4%B8%80%E7%89%A9%E4%BD%93%E6%B2%A1%E5%85%A5%E6%B0%B4%E4%B8%AD%E6%89%80%E5%8F%97%E7%9A%84%E6%B5%AE%E5%8A%9B%E6%98%AF50%E7%89%9B%2C%E6%B2%A1%E5%85%A5%E9%85%92%E7%B2%BE%E4%B8%AD%E5%8F%97%E5%88%B0%E7%9A%84%E6%B5%AE%E5%8A%9B%E6%98%AF%E5%A4%9A%E5%A4%A7%3F%EF%BC%88%E9%85%92%E7%B2%BE%E5%AF%86%E5%BA%A6%E4%B8%BA0.8g%5Ccm3%2Cg%E5%8F%9610N%5Ckg%EF%BC%893.)
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