Search found 5 results
- 11/03/11, 18:59
- Forum : Company and Philosophy
- Subject : End of the world (for 2012), astronomy and assumptions
- answers: 401
- views: 123456
- 27/10/10, 21:18
- Forum : Solar thermal: solar collectors CESI, heating, hot water, stoves and solar cookers
- Subject : USA: 1 gigawatt thermal solar complex :-)
- answers: 3
- views: 2999
- 21/06/10, 20:44
- Forum : Garden: landscaping, plants, garden, ponds and pools
- Subject : Nature also makes mistakes and makes "GMOs"?
- answers: 33
- views: 34627
- 07/04/10, 14:16
- Forum : special motors, patents, fuel consumption reduction
- Subject : Little physics question: potential energy / free fall
- answers: 17
- views: 8998
1st case: T = Mgh (differences of potential energies) 2nd case: E = 1/2 MV² / 2 with V = (2gh) ^ 1/2 (which you demonstrate by starting from the basic equation "sum of the forces = M x acceleration of the solid ", which here is equal to g, only gravity is involved) By replacing V, you thus obtain E = ...
- 25/04/09, 09:34
- Forum : Heating, insulation, ventilation, VMC, cooling ...
- Subject : How to calculate a copper heating resistor ?!
- answers: 15
- views: 17955
For the calculation of a resistance, see here for example:
http://pagesperso-orange.fr/f5zv/RADIO/ ... 23B01.html
http://pagesperso-orange.fr/f5zv/RADIO/ ... 23B01.html