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58问答库 > 3*150+2*70的铜芯电缆一米纯铜有多重?

3150+270的铜芯电缆一米纯铜有多重?

2025-03-29 00:38:33

推荐回答（1个）

回答（1）：

此电缆截面积为S=3×150﹢2×70=590mm²=5.9cm²,1米的话,体积就是V=5.9cm²×100cm=590cm³ ,则质量为m=ρ×V=8.9g/cm³×590cm³=5251g=5.251kg,所受重力为G=mg=5.251kg×9.8N/kg=51.46N.
即：质量为5.251千克.所受重力为51.46牛顿.
另外：这属于物理范畴,不属于化学.
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