[填空题]
Determine the anguladl khllo77hkg/h2ex r+ b*.b9roq*r2erv tkmj:x,2 yxm4;a 6 j momentum of the Earth (a) about its rotation axis (assume the Earth is a uniform sphere), $\times 10^{33} \; kg \cdot m^2$ (b) in its orbit around the Sun (treat the Earth as a particle orbiting the Sun). The Earth has mass $6 \times 10^{24} \; kg$ and radius $6.4 \times 10^{6} \; m$ and is $1.5 \times 10^{8} \; km$ from the Sun. $\times10^{40} \; kg \cdot m^2$