Why does a tiny rock sink to the bottom of a lake, while a giant boat can stay afloat? When any object hits water, it displaces some amount of water. To float, the object needs to be lighter than the ...
new video loaded: Floating lanterns mark 70th anniversary of Hiroshima bombing Residents of Hiroshima float paper lanterns on the Motoyasu River to remember the thousands of victims killed by the ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback