This generates an upward (buoyant) force on the air, as it is lighter than an equal volume of unheated air. Since most sunlight penetrates to the ground, during the day air near the ground is ...

It explains how objects float based on the displacement of water and the balance between gravitational force and buoyant force, referencing Archimedes' principle. The film also examines various ...

There are two forces acting on the life jacket - its weight and the force of the water pushing ... Things that float are buoyant. If the weight is greater than the upthrust, it sinks.

First, we need to know a little about buoyancy. If the buoyant force of a fluid is greater than the downward force (its mass times the gravitational field strength) of an object placed within it ...

In this installment of Hot Science we present three questions that may help you to better understand buoyancy. The first is a kind of warm-up question, dealing with general buoyancy principles.