[填空题]
A diver (such as thefzhi1ws7 h6ev4o4u*s one shown in Fig. 8–29) can reduce her moment of inertigx 3;umiuhqw /gvx4 3e;/a*tlj+o,o va by a factor of about 3.5 when changiu; w3ha extu/j;,m/ v +ilg*qo34xog vng from the straight position to the tuck position. If she makes 2.0 rotations in 1.5 s when in the tuck position, what is her angular speed ($rev/s$) when in the straight position? $rev/s$