Hi everyone, I am having some trouble understanding hydrostatics and buoyancy as taught in my textbook 1) "In a static fluid, the pressure is ISOTROPIC (same in all directions)" <----what does it mean by "same"? Same magnitude in all directions at a single point? Or same magnitude in the entire fluid at every depth? 2) "A boat will float if the weight of the siplaced water EQUALS the weight of te boat." <----is this a correct statement? Because on another page in my textbook it says that an object floats on the surface if it weighs LESS than the fluid it displaces, which is right? The following links to the actual page of my textbook... http://www.geocities.com/asdfasdf23135/phy001.JPG 3) "An ice cube is floating in a glass of water that is filled entirely to the brim. When the ice cube melts, the water level will a) fall b) stay the same, right at the brim or c) rise, causing the water to spill" The correct answer is b, but I don't understand the physcis behind it...can somebody explain this to me, please? I hope that someone can help me out! Thank you for explaning!