I saw a comment on a video on Youtube, http://youtu.be/2hjp75agezo About acceleration. A teacher basically said that acceleration is Δv/Δt He gave a situation where a person went from 5 m/s …

## Physics, Superballs, and the RLC Circuit!

If you bounce a superball it might bounce pretty high on the way up, but it won’t quite make it to the top. A spring also experiences resistance and in a circuit it is blatantly labeled …

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## LRC Circuit, Differential Equations, and an Easier Approach – Phaser Diagrams

An LRC circuit can be described by a second order differential equation, which in truth would take a long time to solve! However, we also know that since each part is in series then the current will …

## Richard Feynman – Science and Chess

Nobel Laureate Richard Feynman compares science to chess. In chess you might also observe a game and thus deduce 'laws' or rules. …

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## How to Simplify Physics Problems

To make physics simpler, an object can be approximated to act like it has all its mass concentrated at a single point. This single point is called the 'center of mass'. If the density of the object …

## Physics of Freeway Entrances

On round freeway turnouts there are almost always signs that say to slow down to a lower speed. The reason for this is that the frictional force of the tires on the road will not always be enough to …