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Author Question: The Muslim fast of Ramadan occurs A) during the ninth month of a 12-month lunar cycle. B) on the ... (Read 126 times)

Deast7027

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on: Jul 27, 2018
The Muslim fast of Ramadan occurs
 
  A) during the ninth month of a 12-month lunar cycle.
  B) on the summer solstice.
  C) during a thirteenth month of the Metonic cycle.
  D) at the end of the Metonic cycle.
  E) on the spring equinox.

Question 2

Describe two leading scenarios for the origin of the planetary rings. What makes us think that ring systems must be continually replenished?
 
  What will be an ideal response?


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6ana001

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

One scenario is that the material near the planet was prevented from forming a moon in the first place because of the strong tidal forces. However, frequent collisions between particles or between particles and their planet's upper atmosphere cause ring particles to disintegrate within a few million years. Therefore, since the ring particles are rapidly disappearing, they must be continually replenished. The leading scenario, then, is one in which numerous small moons orbiting the planets continuously supply new material for the rings.


Deast7027

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

Dinolord

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Reply 3 on: Yesterday
Wow, this really help

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