A 15 lb. block of brass with a specific heat of 0.089 is heated to 189°C and the immersed in 5 gal. of water at 66°C. What is the final temperature of the brass and water? Assume there is no heat loss.

Advanced hybrid materials technology has been used in automotive applications. A good example is engine block made of aluminum body with cast iron liner as shown in Figure. Please explain its advantages and possible disadvantages

Consider the tea kettle in Example 2.10. Suppose that the kettle holds 1 kg of water (about 1 liter) and that the flame impinges on 0.02 m? of the bottom. (a) Find out how fast the water temperature is increasing when it reaches its boiling point, and calculate the temperature of the bottom of the kettle immediately below the water if the gases from the flame are at 500°C when they touch the bottom of the kettle. Assume that the heat capacitance of the aluminum kettle is negligible. (b) There is an old parlor trick in which one puts a paper cup of water over an open flame and boils the water without burning the paper (see Experiment 2.1). Explain this using an electrical analogy. [(a): dT[dt = 0.36°C/s.]

QUESTION 4. Question 4.1 Consider two fluids, one with a large coefficient of volume expansion and the other with a small one with the same viscosity. Explain in which fluid will a hot surface initiate stronger natural convection currents?