Water enters vertically and steadily at a rate of 15 L/s into the sprinkler shown in Fig....

Water enters vertically and steadily at a rate of 15 L/s into the sprinkler shown in Fig. P13-44. Both water jets have a diameter of 1.2 cm. Disregarding any frictional effects, determine (a) the rotational speed of the sprinkler in rpm and (b) the torque required to prevent the sprinkler from rotating.