Which planet may have a habitable moon

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

To a of 4 x hz is 1. 0. mm nm nm