3. An isolated system has an initial temperature of 30oC. It is then placed on top of a Bunsen burner whose temperature is 70oC for an hour. What is the final temperature? Explain. [25]

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?