Question 12 [Problem 23.45] A hole is being drilled in a block of high strength aluminum with a 10-mm drill bit, at a feed rate of 0.2 mm/rev, and with the spindle running at N 500 rpm. Calculate the material-removal rate and the torque on the drill. What is the material-removal rate for this problem? A) 210 mm³/s B) 13.1 mm³/s C) 7854 mm³/s D) 41.7 mm³/s E) 131 mm³/s Question 13 Using Table 21.2. select an appropriate value for the specific energy required for high-strength aluminum. A) 1 W-s/mm³ B) 5 W-s/mm³ C) 0.4 W-s/mm³ DJ 0.7 W-s/mm³ E) 0.15 W-s/mm³ Question 14 What is the power dissipated, P, for this drilling operation? A) 91.7 W B) 105 W C) 210 W D) 7854 W ⚫E) 131 W Question 15 What is the rotational speed of the drill in rad/s? A) 62.8 rad/s B) 8.33 rad/s •C) 52.3 rad/s D) 83.8 rad/s E) 3,142 rad/s Question 16 What is the torque on the drill? • A) 2.5 N-m