FLUID DYNAMICS PRESENTED BY GUO CHENG GUANG and GUO CHENGXI（01-05,s/n:05）

1. A block of material has a density 𝜌 and floats three-fourths submerged in a liquid of unknown density in terms of 𝜌.
2. The density of ice is 917kg/m³, and the approximate density of seawater in which an iceberg floats is 1025kg/m³. What fraction of the iceberg is beneath the water surface.

FLUID DYNAMICS PRESENTED BY GUO CHENG GUANG(aged 11) AND GUO CHENGXI(aged 8) IN ENGLISH(1-05，S/N: 05).
Lessons In Mathematics and Science (Physics, Chemistry and Biology) From Primary to University Presented By Guo Cheng Guang and Guo Chengxi In English. Your comment or suggestion is very much appreciated. https://www.youtube.com/channel/UC2dG5T9SJkUFTy-h0KbVbkw