Question

the moon moves across the sky relative to the background stars at approximately 0.5 degrees per hour. if you look at the moon in the early part of the evening and then spend 2.5 hours in the library studying for an astronomy exam, how far, in degrees, will the moon have moved relative to the stars when you leave the library? angular distance =

Explanation:

Step1: Identify the rate and time

The rate of the Moon's movement is 0.5 degrees per hour and the time spent is 2.5 hours.

Step2: Use the formula for distance

The formula for angular - distance is $d = r\times t$, where $d$ is the angular - distance, $r$ is the rate of movement, and $t$ is the time. Substitute $r = 0.5$ degrees/hour and $t = 2.5$ hours into the formula: $d=0.5\times2.5$.

Step3: Calculate the result

$d = 1.25$ degrees.

Answer:

1.25