The utimate analysis of the fuel used in a boiler is carbon = 80%; hydrogen = 4%; nitrogen = 2%, sulfur = 3.5%, oxygen =7% and the remaining ash. the fuel is burned with 30% excess air with humidity 0.03 mol/mol dry ar and t is assumed that the combustion is complete. if 5 tons per hour of fuel is burned, what is the gas flow rate and is composton after burning?

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed