Which of the following is an effect of the electric force? A. Two negative charges are attracted to one another.

B. Two south poles are attracted to one another.

C. Two north poles repel each other.

D. Two positive charges repel each other.

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Which states of matter have particles that move independently of one another with very little attraction?