Two identical vehicles approach each other from opposite directions on a one-lane road with a 6% grade. Both vehicles are initially traveling at 60 kph. The coefficient of friction, F, between the tires and the roadway is 0.20. The reaction time for the drivers in both vehicles is 0.50 s. Including reaction time, approximately how much time will it take for the vehicle traveling downhill to stop?(A)8.0 s(B)10 s(C)12 s(D)13 s

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.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length