ENGIN 45 Midterm: e45-fa2013-mt2-Gronsky-soln
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This is a 50 minute examination with 5 equally weighted problems. Do not open these pages until start is announced. Print your name clearly in the box above. Silence and stow all cellphones and electronic devices. Only writing instruments / eraser / straightedge are allowed. There are no questions allowed (too disruptive) during the exam. (cid:1) (cid:2) (cid:3) (cid:4) (cid:5) (cid:6) Worksheet (there will be no points awarded for work shown on this page. Enter your answers on the following pages in the space provided. ) Explain the format of this data presentation, comparing and contrasting the four data sets shown here, using sketches to illustrate your rationale. Answer: the format of this data presentation, ln d vs 1/t, is the standard for phenomena exhibiting. Diffusion is one such phenomenon, as evidenced by taking the natural log of both sides of the equation for diffusivity given in the worksheet, as follows ln d = ln d0 q.
