Dans une centrale Thermique au charbon, l'energie thermique liberee lors de la combustion complete de 1kg de carbone vaut 20MJ. Dans une centrale thermique liberer par la combustion complete de 1m au cube vaut 35,8 MJ (1MJ=10 puissance 6 J). Question :
A l'aide d'un tableau de proportionnalite, calculer l'energie degage par la combustion de 5 tonnes de charbon puis par la combustion de 25m au cube de methane?

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as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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friction

explanation:

they us to move forward and backwards