Multiple Choice
Suppose a star rises due east, passes directly overhead, and then sets 12 hours after it rose. What is its average angular speed (in arcseconds per second) ?
A) 7.5
B) 15
C) 30
D) 180
Correct Answer:

Verified
Correct Answer:
Verified
Q16: The time taken for light to travel
Q17: The most important reason for exploring other
Q18: The star <span class="ql-formula" data-value="\gamma"><span
Q19: 10 × 10<sup>5</sup> =<br>A)1 billion<br>B)10 million<br>C)1 million<br>D)10,000
Q20: A globular cluster of stars is measured
Q22: 10<sup>-2</sup> × 10<sup>2</sup> =<br>A)0<br>B)1/100<br>C)1<br>D)10,000
Q23: 10<sup>5</sup> × 10<sup>8</sup> =<br>A)10<sup>40</sup><br>B)10<sup>3</sup><br>C)10<sup>13</sup><br>D)10<sup>20</sup>
Q24: Astronomy:<br>A)has not yet influenced our lives significantly,
Q25: Using a technique known as very long
Q26: The average distance from Earth to the