[填空题]
A diver (such as the 5oc0ou w- **ci+4jk i ucb8akione e4x- /gljakx-z vwdj;t,c ,e) shown in Fig. 8–29) can reduce her moment of inertia by a factor of about 3.5 when changing from the straight position to the tuck position. If she makes 2.0 rotations in 1.5 s when in the tuck posi,x,xc/jvelg-4 ek;zt w-d aj)tion, what is her angular speed ($rev/s$) when in the straight position? $rev/s$