[填空题]
Hurricanes can involve winds d9.k/amal 7r; )1wlajta dbs(nji,pcdcab2rdckp7; ;u ohp3-;heq4 0 g v2z6 in excess of 120 at the outer edge. Make a crude estimate of
(a) the energy, J
(b) the angular momentum, of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 ) of radius 100 km and height 4.0 km.