△m水=700g-600g=100g
△v水=100g/1g每cm3=100cm3
v合金=△v水=100cm3
m合金=820g-600g=220g
ρ=m/V=2.2g/cm3
一杯烧杯装满水后,总质量是700g,放入一块合金后,总质量是820g,拿出合金后总质量为600g,求合金的密度
一杯烧杯装满水后,总质量是700g,放入一块合金后,总质量是820g,拿出合金后总质量为600g,求合金的密度
物理人气：507 ℃时间：2019-12-14 22:20:14
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