1) A field is bounded by an irregular hedge running between points E and F and three straight fences FG, GH and HE. The following measurements are taken: EF = 167.76 m, FG = 105.03 m, GH = 110.52 m, HE = 97.65 m and EG = 155.07 m Offsets are taken to the irregular hedge from the line EF as follows. The hedge is situated entirely outside the quadrilateral EFGH. E (0 m) 25 m 50 m 75 m 100 m 125 m 150 m F(167.76 m) 0 m 2.13 m 4.67 m 9.54 m 9.28 m 6.39 m 3.21 m 0 m Calculate the area of the field to the nearest m2 .

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.

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.

Acertain flow of air (at stp) has a velocity distribution given by v i (in ft/s). if this flow is going through a 4 ft square area in the yz-plane (centered at the origin), what is the mass flow rate (in lbm/s)?