Engineers are planning to build a highway that runs through a forest (0% impervious). However, the new regional regulations specify that the development of the area cannot increase the runoff of TKN (Total Kjeldakl Nitrogen) to the nearby river. The highway section going through the forest will be built of conventional materials (100% impervious), it is five miles long, and contains 4 lanes (12 ft wide each). The annual rainfall in the region is 41 in and 80% of the annual rainfall generates runoff. What is the annual TKN load increase due to the construction of the highway (in kg/yr)

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer