Find the work done lifting a 290-pound weight 28 feet in the air.
a.
4,582 foot-pounds
c.
no work is done
b.
6,132 foot-pounds
d.
8,120 foot-pounds

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 which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic

Could we see a galaxy that is 20 billion light-years away?