Solve These Problems:-

To get started in a new telecommuting position with AB Hammond Engineers, Jane took out a $1000 loan at i = 10% per year for 4 years to buy home office equipment. From the lender's perspective, the investment in this young engineer is expected to produce an equivalent net cash flow of $315.47 for each of 4 years. A = $1000(4/P,10%,4) = $315.47 This represents a 10% per year rate of return on the unrecovered balance. Compute the amount of the unrecovered investment for each of the 4 years using (a) the rate of return on the unre- covered balance (the correct basis) and (b) the return on the initial $1000 investment. (c) Ex- plain why all of the initial $1000 amount is not recovered by the final payment in part (b).\f\fIn a manufacturing process, a transparent film is being bonded to a substrate as shown in the sketch. To cure the bond at a temperature To, a radiant source is used to pro- vide a heat flux qo (W/m?), all of which is absorbed at the bonded surface. The back of the substrate is main- tained at 7, while the free surface of the film is exposed to air at To and a convection heat transfer coefficient h. Air 90 Ly = 0.25 mm Film ky = 0.025 W/m.K Ly = 1.0 mm Bond, To k, = 0.05 W/m-K Substrate (a) Show the thermal circuit representing the steady-state heat transfer situation. Be sure to label all elements, nodes, and heat rates. Leave in symbolic form. (b) Assume the following conditions: To. = 20 C, h = 50 W/m . K, and 71 = 30 C. Calculate the heat flux go that is required to maintain the bonded surface at To = 60 C. (c) Compute and plot the required heat flux as a function of the film thickness for 0 S Ly = 1 mm. (d) If the film is not transparent and all of the radiant heat flux is absorbed at its upper surface, determine the heat flux required to achieve bonding. Plot your results as a function of Ly for 0 = Ly = 1 mm.\f\f