A90 wt% ag-10 wt% cu alloy is heated to a temperature within the b + liquid phase region. if the composition of the liquid phase is 85 wt% ag, determine: (a) the temperature of the alloy song (b) the composition of the ß phase (c) the mass fractions of both phases

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