Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics ...

Free body diagrams do not need to be drawn to scale but it can sometimes be useful if they are. It is important to label each arrow to show the magnitude of the force it represents. The type of ...

The Big Bang Theory let Kaley Cuoco’s Penny skate past a plot hole that had FRIENDS fans fuming. Both Penny and Joey lived in pricey apartments despite struggling acting careers. Yet while Joey got ...

The primary source code repository for Macaulay2, a system for computing in commutative algebra, algebraic geometry and related fields.