d 0 a ch o D Q of stretching a non-linear spring requires an amount of Work given by the equation U - 154² 10x², Where U is in Joules and (x) is is meters. How much force is required to hold this spring stretched out im from its equilibrium position ?​

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

What is the main objective of using reheat rankine cycle?

Air (c-1.006 kj/kg.k, r-0.287 kj/kg.k) enters a nozzle steadily at 280 kpa and 77°c with a velocity of 50 m/s and exits at 85 kpa and 320 m/s. the heat losses from the nozzle to the surrounding medium at 20°c are estimated to be 3.2 kj/kg. determine (a) the exit temperature and (b) the total entropy change for this process. solve this problem using constant specific heats.