Question

question 12 1 pts suppose an astrophotographer hands you a picture with star trails taken looking toward the north celestial pole. if the star trails are 1/4 of a complete circle, about how many hours was the picture exposed?

Explanation:

Step1: Recall Earth's rotation period

The Earth rotates 360° in 24 hours, so the time for a full circle (360°) of star trails is 24 hours.

Step2: Calculate time for 1/4 circle

If a full circle (360°) takes 24 hours, then for 1/4 of a circle, we calculate the time as $\frac{1}{4} \times 24$ hours.
$\frac{1}{4} \times 24 = 6$ hours.

Answer:

6