When something is observed it is always observed from some vantage point. If two people are running next to each other it will not seem as if the other is moving, since their relative motion is the …

## Car velocity physics – physics velocity

A physics professor drives along in his camry on the highway and covers about 88 feet per second or a velocity of 100 km/h when he observes a mitsubishi GT 3000 that races out onto the freeway. This …

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## Derivatives and Differentials

Differentials and Derivatives A. Letters u and v denote independent variables or functions of an independent variable; letters a and n denote constants. B. To obtain a derivative, divide both …

## Dimensional Analysis in Physics – Checking Answers

Dimensional analysis Dimensional analysis allows a quick check of your answer by seeing if the units are correct. An example would be if you are finding a distance by multiplying a speed by a time. …

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## Greek Alphabet

Greek letters surface all the time in physics, here are the 24 letters in capital and lower case, along with their names. Alpha α Α Beta β Β Gamma γ Γ Delta δ Δ Epsilon …

## Sound Level Terminology

Absorption Coefficient- Denoted by alpha (units of inverse meters) and "a" (dB/m). This constant measures the sound-absorbing ability of a material. The values go from about 0.01 for marble slate to …