This video shows the process for solving the problem presented in IGCSE A June 2018 paper 1HR Q22, which involves the density and volume of a 3D shape. Students will understand the concept of density and its relation to mass and volume....

This program covers the very important topic of density as it relates to chemistry. We begin by discussing mass and volume and conclude by showing that the ratio of these quantities (mass per unit volume) is a very useful way to compare...

This video shows the process for solving the problem presented in IGCSE A June 2018 paper 2H Q11, which involves finding the density of a solid sphere. Students will learn how to use the formula for the volume of a sphere to find its...

If we can use the ideal gas law to find the molar mass of a gas and therefore identify the gas, what can we do with the density of a gas? Well, pretty much the same thing, it just involves one extra calculation, so let's give it a try!

This video is about the Schwarzschild radius of a black hole, (its "event horizon"), and how much mass and density is required to reach the point of no return where an object like a star, neutron star, red giant, etc...

Learn how the speed of an ideal fluid changes when it flows through a pipe with varying cross-sectional areas. In this fun and engaging video, we apply the continuity equation for volumetric flow rate and solve a problem step-by-step....

Can we do stoichiometry regarding phase changes? Sure! If we know how many moles of a substance we have, and the energy associated with each mole of that substance undergoing a particular phase change, we can get the energy associated...

Stories of discovery and invention often begin with a problem that needs solving. Summoned by the king to investigate a suspicious goldsmith, the early Greek mathematician Archimedes stumbles on the principle that would make him famous.

Join us as we investigate a classic question: what happens to the water level in a glass when a chunk of ice melts? Learn about buoyant force, density, and volume displacement, and witness the principles of physics come to life before...

Cosmic inflation is a theory that was proposed in the 1980s by cosmologist Alan Guth to answer some of the most fundamental questions of the origins of our universe. It also solved the Horizon Problem and the Flatness Problem.

In this video Paul Andersen explains how the continuity equation is an application of conservation of matter in a fluid. The continuity equation may apply to either mass or volumetric flow. Example problem and examples are included.

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The law of energy conservation may be the most fundamental law in physics. It says that overall energy is always conserved. It can never be created nor destroyed - it can only change form. But this law...

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