What is the nucleation mechanisms in which nuclei of the solid phase form in the interior of the liquid as atoms cluster together to form a packing arrangement similar to that found in the solid phase?

What is the scientific definition of energy that relates to work

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?