The time, t, it takes to pour a certain volume of liquidfrom a cylindrical container depends on several factors, includingthe viscosity of the liquid. (See Video V1.3.) Assume that for veryviscous liquids the time it takes to pour out two-thirds of the initialvolume depends on the initial liquid depth, , the cylinder diameter,D, the liquid viscosity, , and the liquid specific weight, . Thedata shown in the following table were obtained in the laboratory.For these tests = 45 mm, D = 67 mm, and = 9.60 kN/m3.(a) Perform a dimensional analysis, and based on the data given,determine if variables used for this problem appear to be correct.Explain how you arrived at your answer. (b) If possible, determinean equation relating the pouring time and viscosity for the cylinderand liquids used in these tests. If it is not possible, indicate whatadditional information is needed. (N s/m2) 11 17 39 61 107t(s) 15 23 53 83 145
Lecture 5 Homeownership Boom and Bust Booms and busts normal here Spain and Italy have higher homeownership rates Currently 63.8% homeownership (peak of 69% in 2004) Blacks/Hispanics/young adults hit the most Home and Rent Prices Home prices typically rise at appx overall rate of inflation over most of the past century Home's sale price derived from rents it can generate House prices rise/decline w/ rental prices Peak of housing bubble: ratio went out of whack In US we have nonrecourse homes: i.e., if you lose your house, you don't have to pay the rest of the loan
