Is a tissue in some plants that is made of specialized cells and that transports nutrients from the leaves to other areas of the plant. a. dicot b. monocot c. phloem d. xylem

idk what is it? is this a question that you know the answer or u dont

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.