Some General Energy Examples

Energy costs compared to gasoline Energy of heating vs lifting water Energy unit comparison
Energy of a truck at highway speeds Energy to run a mile Human energy and power
Household energy use
 Index

Energy concepts
 
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Energy Unit Comparison

One of the difficulties of reading articles about energy resources is the plethora of units used. This is an attempt to give a comparison of some commonly quoted energy units. You may enter a number in any of the boxes to calculate the comparisons in other units.
Joules x 10^
.....ft-lb x 10^
..........calorie x 10^
...............BTU x 10^
....................kWh x 10^
.........................gallons of gasoline x 10^
..............................1000 cu ft of natural gas x 10^
...................................barrel of oil x 10^
........................................ton of coal x 10^
The energy values for the common fuels are nominal values since the energy content of these fuels varies with the source.

The SI unit for energy is the Joule = newton x meter, the work done by exerting a newton of force through 1 meter of distance. In the CGS system, the energy unit is the erg = dyne x cm, the work done by exerting one dyne of force through 1 cm of distance. The Joule = 107 ergs.

Index

Energy concepts

Physical units
 
HyperPhysics***** Mechanics R Nave
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