Adancer spins at 72rpm about an axis through the center with arms outstretched. the dancer mass=90kg, model the head as a uniform sphere r=8.0cm model the trunk and legs as uniform solid cylinder r=12.0cm, arms as slender rods l=60.0cm. on the average the head=7%, both arms together=13% and trunk and legs=80% of body mass. find i and then calculate the rotational ke.15

The field lines around one end of a bar magnet are shown below based on the diagram, what can you conclude about the pole of the magnet? a.is a south pole because the field hnes spread out from this end b.a north pole because the field lines spread out from this end c.a nouth pole because the field lines enter the magnet at this end d.is a north pole because the field lines enter the magnet at this end