Our physics expert picks his top-five equations, plus a scheme to supply US power needs with a bucket of baseballs. Thanks, ...

Energy is conserved. It cannot be created or destroyed. Energy can be transferred between stores. The total energy has the same value before and after any changes. A diving platform is 10 m above ...

Energy is a concept that’s central to physics, but because it’s a word ... gravitational potential energy (for which he gives the formula) is converted into other forms. He ends with the ...