Answer
The answers are below.
Work Step by Step
We use the equation for angular speed, which is $\omega = \frac{2\pi}{\Delta t}$, to find:
a) $\omega=\frac{2\pi}{86400}=7.27\times10^{-5}$
b) $\omega=\frac{2\pi}{s3600}=.0017$
c) $\omega=\frac{2\pi}{12\times3600}=1.45\times10^{-4}$
d) $\omega=\frac{2\pi}{.205}=30.7$