Physics, 02.02.2021 18:30 shaakiraak
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?
Quelqu'un peut m'aider s'il vous plait?
Answers: 1
Physics, 22.06.2019 10:20
Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)
Answers: 2
Physics, 22.06.2019 10:30
Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.
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Physics, 22.06.2019 18:30
Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?
Answers: 1
Physics, 22.06.2019 22:00
Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)
Answers: 1
Dans une centrale Thermique au charbon, l'energie thermique liberee lors de la combustion complete d...
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