Name two things in your life that require power

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?

In a good thermo flask the main cause of heat loss is

The heliocentric and the geocentric models of the solar system included these central principles