ELLIE: And if you want to really get into it, be sure to grab a pen and paper so you can make notes and try out equations ... that kinetic energy becomes part of the gravitational potential ...

Van der Waals Equation. Condensation of gases ... Absolute Temperature scale. Free Energy Helmholtz and Gibbs Energies. Thermodynamic Relationships. How G varies with T and P. The Chemical Potential.

As the book gets faster it gains more kinetic energy and loses more potential energy. Just before it hits the floor all the gravitational potential energy has been converted to kinetic energy.

The characteristic of stars, such as our sun, is that their gravity keeps the nuclei present on them so close and hot that a fusion process is triggered, producing a huge amount of energy. On earth, ...