1.

The angular speed of earth around its own axis is$(1)\frac{\pi}{43200} \mathrm{rad} / \mathrm{s} \quad$ (2) $\frac{\pi}{3600} \mathrm{rad} / \mathrm{s}$(3) $\frac{\pi}{86400} \mathrm{rad} / \mathrm{s} \quad$ (4) $\frac{\pi}{1800} \mathrm{rad} / \mathrm{s}$

Answer»

option c is the correct answer



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