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Fav十万个为什么
为什么石头会下沉水中？
石头会下沉在水中，主要基于以下几个原因：
1、密度差异：石头的密度通常大于水的密度。密度是物质的质量与其体积的比值，因此，当石头的密度大于水时，它会受到的浮力小于其自身的重力，导致下沉。
2、重力作用：地球的重力会作用于石头，使其具有重量。当石头置于水中时，重力仍然作用在石头上，使其向下沉。
3、浮力不足：虽然水对石头产生浮力，但这个浮力通常不足以抵消石头的重力。浮力的大小与石头排开的水的体积和水的密度有关，但由于石头的密度较大，排开的水的体积不足以产生足够的浮力来支撑石头，因此石头会下沉。
总结：石头会下沉在水中主要是由于密度差异、重力作用以及浮力不足共同作用的结果。这些因素导致石头的重力大于水对其产生的浮力，使其在水中下沉。
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