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Q18. Calorific value of wood is 1800 ku/kg. How much wood is required toproduce heat energy of 144,000KJ?Q19. A force of 150N is applied to an object of area 5m2 Calculate thepressure |
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Answer» 19)pressure = force /area150N/530N/m thanks and second Required wood = 144000/1800=80kg |
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