)what is the sensitivity k of the sensor in [v/n]? b) what is the sensor’s damping ratio, ? c) what is the natural frequency n of the sensor? d) it turns out that we can adjust the damping and thus alter the damping ratio in the sensor. we need the sensor to measure a dynamic signal with frequencies up to 90% of the natural frequency calculated in part (c). determine the range of damping ratios that would be acceptable to limit the magnitude response error to 10%.

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w