Capillary Definition and 103 Threads

Hi Folks - This started out as a simple experiment we could do for my daughter's science fair (9th grade). Now I am truly ashamed to admit that I don't really know the best way to analyze the reasonably good results of the experiment. The experiment was to measure the effect of fluid...

I was having trouble with this problem. please let me know how to approach this. thanks. The density of ice is 920 kg/m3, and that of seawater is 1030 kg/m3. What fraction of the total volume of an iceberg is exposed?

The human heart is able to power viscous blood through ~100,000 miles of narrow capillaries in less than a minute. Do the capillaries themselves provide a substantial fraction of the needed impulse?