State the molecular theory of magnetism

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.