Two questions: will mark

explain why a thrown foot ball have both potential and kinetic energy? what is the combined energy called?

use the picture for this one.
how do the principles of convection, conduction, and radiation explain how the water in the saucepan gets hot?

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.