Liquid flows at steady state at a rate of 2 lb/s through a pump, which operates to raise the elevation of the liquid 100 ftfrom control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/ lb and at the exit is 40.94 btu/ lb. thepump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32174ft/sz, the heat transfer rate associated with this steady-state process is most closely(a) 1.04 btu/s from the liquid to the surroundings(b) 202 btu/s from the liquid to the surroundings(c) 3.98 btu/s from the surroundings to the liquid(d) 4.96 btu/s from the surroundings to the liquid

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?