(1)ρ物=m物/V物=2÷(0.1)^3=2x10^3kg/m^3.
(2)物体受到的浮力F浮=ρ水gV排=1.0x10^3x10x0.08x0.1x0.1=8N,所以弹簧称的示数为
F示=G-F浮=20-8=12N;
(3)P=ρ水gh=1.0x10^3x10x0.08=800pa.
(1)ρ物=m物/V物=2÷(0.1)^3=2x10^3kg/m^3.
(2)物体受到的浮力F浮=ρ水gV排=1.0x10^3x10x0.08x0.1x0.1=8N,所以弹簧称的示数为
F示=G-F浮=20-8=12N;
(3)P=ρ水gh=1.0x10^3x10x0.08=800pa.