Boats are such a part of our lives that we may not think twice about all the things that make them tick. We're more than happy to enjoy a ride over the water, but that's one of the more puzzling facts ...

The units of density depend on the units used for mass and volume. The most commonly used units are grams per cubic centimetre (g/cm³) or kilograms per cubic metre (kg/m³). These balloons are the same ...

The density of an object or substance is its mass divided by its volume: Density = Mass ÷ Volume. The units of density depend on the units used for mass and volume, but are usually: g/cm³ (if mass is ...

We all deal with engines, so we should know about their relationship with air pressure and density. Query any serious bracket racer, and you'll find he's become a virtual closet meteorologist. What is ...