Practice - 13.2: Solve conduction problems - Practice Q 13.21: Which is an example of heat...
Question 1: Identify the classification of the following heat transfer (convective flow) problems: *Note that there may be other modes of heat transfer present (e.g. radiation or conduction), but ignore those effects. For example, a hot ball bearing being dropped from a building roof. Ans. Forced, external convection over a sphere. a. Water flow through a fire hose from a hydrant. b. Heat transfer from a clothes iron sitting on an ironing board. c. Heat transfer from a climber trapped...
Exercise 5: I was changing 34 around too much that I just made it a separate exercise. Suppose 310. grams of ethanol (ethyl alcohol) is in an aluminum cup of 90.0 grams. Both of these are at 30.0C. A mass m of ice at - 8.5C is taken from a freezer and added to the alcohol in the cup. The final temperature of all the components is 18.0C. Assuming no heat was lost from the system, calculate the mass m...