5. (10 points) air at a pressure of 2 bar, a temperature of 52oc and a mass flow rate of 0.45 kg/s enters an insulated duct having different inlet and exit diameters. the diameter of the duct exit is 5 cm, the exit velocity is 225 m/s, and the pressure at the exit is atmospheric. (5a). (4p) determine the temperature of the air at the exit. (5b). (6p) determine the rate of entropy generation within the duct.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a