ME 3834 : Exam1 F05
Document Summary
Guidelines: you may use your formula sheet and any information provided by the instructor on this exam. Please turn in your formula sheet with the exam: there may be too little or too much information given to solve the problem. If you need to make assumptions, clearly state them: be neat. Points will be deducted for sloppiness: box in nal answers and give appropriate units. Problem #3 (30 points) (30 points) (30 points) 1: a tank of xed volume contains brine with initial density, i, greater than that of water. Pure water enters the tank steadily and instantaneously mixes thoroughly with the brine within the tank. The liquid level in the tank remains constant as shown below. Determine: (a) the rate of change of density of the liquid mixture within the tank. (b) the time required for the density to reach the value f , where i > f > h2o.
