A converging duct is fed with air from a large reservoir where the temperature and pressure are 400 K and 200 kPa, respectively. The Mach number at a point along the duct, where the cross•sectional area is 0.01 m', is 0.7. Determine the temperature, pressure, velocity and density at that point, and also calculate the mass flow rate. Assume lsentropic flow throughout the nozzle.

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.