[填空题]
What is the angular momentumpf0q pffng ej+ ,.6/3jzddgk6 of a h a)k.w-qmrb s oeic52mzt/j .)6 zu2djg/ n:u0.210-kg ball rotating on the end of a thin string in a circle of radius 1.10 m at an angulkg)2orjbz tdmj5eahu c n qw..)62u/-z/s :mi ar speed of 10.4 $rad/s$? $kg \cdot m^2$