Question

科技小组的同学们在薄壁平底是管中装入一些细沙后,制成一个“土密度计”

Answer 1

G=mg=0.02kg*10N/kg=0.2N

p=F/s=0.2N/1.6*10^-4=1250Pa

h1=p/水*g=1250Pa/1.0*10^3kg/m3*10N/kg=0.125m

h2=0.125m-0.01m=0.115m

豆浆=p/g*h2=1250Pa/10N/kg*0.115=1.09*10^kg/m3