Why does having low levels of glucose or oxygen in his cells make it difficult for David to walk up steps? Which body systems should the doctor test in order to find out whether David's
cells are getting enough oxygen and glucose and why?

Two wooden members of 80 × 120-mm uniform rectangular cross section are joined by the simple glued scarf splice shown. knowing that β = 22° and that the maximum allowable stresses in the joint are, respectively, 400 kpa in tension (perpendicular to the splice) and 690 kpa in shear (parallel to the splice), determine the largest centric load p that can be applied using mohr's circle. (round the final answer to two decimal places.)