How long does it take the earth to rotate 90 degrees?
6 hours.
4 hours.
12 hours.
8 hours.
Detailed Explanation
The Earth takes approximately 6 hours to rotate 90 degrees. This is because the Earth rotates at a constant rate of 15 degrees per hour (360 degrees divided by 24 hours), so it would take 6 hours to rotate 90 degrees (15 degrees per hour multiplied by 6 hours).
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