Write a wrapper class kernelsemaphore on top of posix kernel semaphore. see sem_overview(7) in man pages or linux. die. net to learn about kernel semaphores. test your kernelsemaphore class by by setting the initial value to 0. then write 2 programs – one waits for the semaphore and the other one releases (i. e., v()’) it. the header for the kernelsemaphore and the 2 programs in questions are provided in the below. you should make sure that the consumer program can only print out its prompt after the producer program has released the semaphore.

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.

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

Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1