A) Liquid water at 294.26 K flows in an insulated straight horizontal pipe in which there i no exchange of work with the surrounding. It's velocity is 9.144 m/s in a pipe with a internal diameter of 2.54 cm until it flows into a section where the pipe diameter abruptly increases. (1)What is the enthalpy change of the water if the downstream diameter is 3.81 cm? (2)What is the enthalpy change of the water if the pipe diameter remain constant (without any increase in diameter)? (3) What is the type of this system? (4) What is the change in entropy?

A) Liquid water at 294.26 K flows in an insulated straight horizontal pipe in which there i no exchange of work with the surrounding. It's velocity is 9.144 m/s in a pipe with a internal diameter of 2.54 cm until it flows into a section where the pipe diameter abruptly increases. (1)What is the enthalpy change of the water if the downstream diameter is 3.81 cm? (2)What is the enthalpy change of the water if the pipe diameter remain constant (without any increase in diameter)? (3) What is the type of this system? (4) What is the change in entropy?