Units, Dimensional Analysis, and Conversion Factors: Screencasts

Defines quantity with value and units.

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Describes dimensional analysis. 

We suggest that after watching this screencast, you list the important points as a way to increase retention.

Explanation of how to convert units. 

We suggest that after watching this screencast, you list the important points as a way to increase retention.

Important Equations:

Some basic conversion factors: 

Force, in Newtons: \(1\,N\, =\,1\,\frac{kg\,\,m}{s^2}\)

Energy, in Joules: \(1\,J\,=\,1\,N\cdot m\,=\,1\,\frac{kg\,m^2}{s^2}\)

Power, in Watts: \(1\,W\,=\,1\,J/s\,=\,1\,\frac{kg\,m^2}{s^3}\)

Pressure, in Pascals: \(1\,Pa\,=\,1\,\frac{N}{m^2}\,=\,1\,\frac{kg}{m\,s^2}\)

Mass: \(1\,lb_m\,=\,454\,g\)

Length: \(1\,inch\,=\,2.54\,cm\,=\,0.0254\,m\)

Volume: \(1\, gallon\,=\,3.79\,L\,=\,0.00379\,m^3\)