How many times does the Moon rotate on its axis in one orbital period?
A. several times
B. twice
C. only once
D. The Moon does not rotate.
Answer: C
Physics & Space Science
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Simple Harmonic Motion: The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
A. 30.5 µs B. 15.3 µs C. 95.8 µs D. 0.191 ms E. 9.71 µs
Physics & Space Science
Astronomy's largest optical telescopes are ________.
A. refractors B. diffractors C. deflectors D. reflectors
Physics & Space Science
Why are emission nebulae ideal places to go hunting for brown dwarfs?
What will be an ideal response?
Physics & Space Science
An adiabatic expansion refers to the fact that
a. no heat is transferred between a system and its surroundings. b. the pressure remains constant. c. the temperature remains constant. d. the volume remains constant.
Physics & Space Science