.................................................................
m=P/g=50/9,8=5,1(кг)
V=300см3=0,0003м3
p=m/V=5,1/0,0003=17000(кг/м3)
.................................................................
m=P/g=50/9,8=5,1(кг)
V=300см3=0,0003м3
p=m/V=5,1/0,0003=17000(кг/м3)