Astack of fake coins there are n stacks of n identical-looking coins. all ofthe coins in one of these stacks are counterfeit, while all the coins in the otherstacks are genuine. every genuine coin weighs 10 grams; every fake weighs11 grams. you have an analytical scale that can determine the exact weight ofany number of coins. a. devise a brute-force algorithm to identify the stack with the fake coins anddetermine its worst-case efficiency class. b. what is the minimum number of weighings needed to identify the stackwith the fake coins?

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

On a average work day more than work place firs are reorted

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.