為什么新鮮雞蛋泡在鹽水里會(huì)升起來
為什么新鮮雞蛋泡在鹽水里會(huì)升起來
物理人氣:186 ℃時(shí)間:2020-02-05 09:34:35
優(yōu)質(zhì)解答
(1)浮力F=PgV (p密度 g=9.8N/kg v體積)(2)雞蛋的重力是 G=mg所以,當(dāng)F>G的時(shí)候,雞蛋就浮起來了.而清水的密度比較小,浮力也相對(duì)小,當(dāng)雞蛋放到清水中時(shí),FG,所以,雞蛋就浮起來了.注:鹽水的浮力比清水大鹽溶解在水...
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