$#/bin/bash /* check error script */ echo "try to find out some ! " # seach for the words which can be matched by regex [^a]*ce # and save the output to file "result" echo "the regex [^a]*ce can match the string(s): " > result grep '^[^a]*ce$' < < end > > result lance ace brace decide piece -endhere # check the existence of file "result" # send the content in "result" to your emailbox # $1 is replaced by your campusid ls mail $1@student. gsu. edu < result # $1 is replaced by your campusid echo "the result has been sent to ${1}@student. gsu. edu" echo "congratulations! you have corrected all the errors! "

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

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.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.