What is the center of atom called? ?

Aregular polygon has angkes of size 150° each.how many side has the polygon

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

2) a cubical block of stone is lowered at a steady rate into the ocean by a crane, always keeping the top and bottom faces horizontal. which one of the following graphs best describes the buoyant force b on this block as a function of time t if the block just enters the water at time t = 0 s?