Consider the following C program: #include #include int main() { printf("%d\n", getppid()); while(1) {} } Suppose that we execute the program in the background with the command './a. out &'. This gives us the ability to run the ps command while the C program is executing. The following is displayed by the ps command: PID TTY STAT TIME COMMAND 9489 pts/0 Ss 0:00 -tcsh 10314 pts/0 R 0:14 ./a. out 10320 pts/0 R+ 0:00 ps a What is printed by the C program?

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

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.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.