Un pendule est constitue par une masse ponctuelle m= 0,1kg accrocher a un fil sans masse de longueur L = 0,4 m on ecarte ce pendule d, un angle Om= 0,1 rad de sa position d’equilibre et on l’abondonne sans vitesse initiale a la date t0=0. Prendre g= 10 m/s2 et on neglige la force de frottement a-) Etablir l’equation defferentielle de mouvement

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.