The mass of a piece of cork is 20g. what fraction of the cork is immersed when it float in water? [Take density of cork to be 0.25g/cm³].​

Which statements best describe energy? check all that apply. the total amount of energy in the universe remains constant. the total amount of energy in the universe changes constantly. energy cannot be converted from one form to another. energy can be converted from one form to another. energy cannot be created or destroyed. energy can be created or destroyed.