3) Drying a water-soaked pole ( 9 pts) a) A cylindrical wood pole has become soaked with water to a uniform moisture content of 50 wt\%. You wish to dry out this pole in a drying oven where its surface moisture is maintained at 10 wt\% (you don't want to dry so fast that the pole warps or cracks). The pole has a diameter of 10cm and is 45cm in length. The oven has a fan so that there is negligible resistance to mass transfer of moisture through the air. The diffusivity of moisture in the pole is 105cm2/s. Assume the pole is coated on the sides with pitch such that no moisture can get through the pitch coating on the sides. How long (in days) will it take to get the maximum moisture content in the pole down to 20wt% if we are counting on transport of the moisture out the ends of the pole for drying? b) Solve the above problem by using the chart in Appendix F of the textbook (WRF). Table F.9 Symbols for unsteady-state charts Figure F.I Unskeady-state transpert in a larye llat slab