Ahorizontal cylinder is separated into two compartments by an adiabatic frictionless piston. one side contains 0.2 m3 of nitrogen and the other side contains 0.1 kg of helium, both initially at 20°c and 95 kpa. the sides of the cylinder and the helium end are insulated. now heat is added to the nitrogen side from a reservoir at 500°c until the pressure of the helium rises to 120 kpa.

determine

(a) the final temperature of the helium,

(b) the final volume of the nitrogen,

(c) the heat transferred to the nitrogen,

(d) the entropy generation during this process.

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