Re: Physics question -- 九濟堂

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Subject: Re: Physics question

Author:
中七

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Date Posted: 00:31:19 05/10/05 Tue
In reply to: F.3 's message, "Physics question" on 13:31:50 05/09/05 Mon

>Ice nas a density of 920 and therefore float in water.
>What fraction of a floating piece of ice submerged?
>(use Archimedes' Principle)
>
>我並唔係想只抄steps, 我希望能夠有解釋......thx
中六就識計架喇

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[> Subject: Re: Physics question

Author:
試答
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Date Posted: 18:36:44 05/10/05 Tue

>Ice nas a density of 920 and therefore float in water.
>What fraction of a floating piece of ice submerged?
>(use )
>
>我並唔係想只抄steps, 我希望能夠有解釋......thx

ice density : water density = 920:1000
density = mass/volume
by Archimedes' Principle, ice will displace water of a volume such that its mass(or weight) equal to the mass of whole cube of ice
so ice cube volume: water displaced volume = 1000:920
so 920/1000*100%=92% of ice is submerged
is that right?