Harlequinne Posted December 16, 2008 Share Posted December 16, 2008 Do Joules divided by Kilograms per Square Meter equal Miles per Hour? ie does E=mc^2? Link to comment Share on other sites More sharing options...
Severian Posted December 16, 2008 Share Posted December 16, 2008 Not quite. The correct expression would be: Joules divided by Kilograms are equivalent to metres-squared per second-squared. Link to comment Share on other sites More sharing options...
Harlequinne Posted December 16, 2008 Author Share Posted December 16, 2008 Not quite. The correct expression would be: Joules divided by Kilograms are equivalent to metres-squared per second-squared. Newton meters/wg=square of light speed? I feel that the units are inconsistent.could you break it down for me,please? Link to comment Share on other sites More sharing options...
D H Posted December 16, 2008 Share Posted December 16, 2008 1 joule is, among other things, The work done on some object by a force of one newton as the object moves a distance of one meter, from [math]W=\oint \mathbf F \cdot d\mathbf l[/math] The kinetic energy of a 2 kilogram mass moving at the non-relativistic velocity of 1 meter per second, from [math]KE=\frac 1 2 m v^2[/math] These expressions have the same fundamental units and the same numerical value: [math]1\,\text{joule} = 1\,\text{newton}\,*\,1\,\text{meter} = 1\,\text{kg}\,\text{meter}/\text{second}^2\,*\,1\,\text{meter} = \frac 1 2\,*\,2\,\text{kg}\,*\,(1\,\text{meter}/\text{second})^2[/math] Energy has units of mass*velocity squared. The expression [math]mc^2[/math] has units mass*velocity squared -- energy. Link to comment Share on other sites More sharing options...
Harlequinne Posted December 22, 2008 Author Share Posted December 22, 2008 muchos gratias Link to comment Share on other sites More sharing options...
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