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Home Q & A Board Science-Related Homework Help Physics
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doit_the_clown doit_the_clown
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7 years ago
How does the number of sunspots on the Sun vary with time?
A)   They vary relatively regularly, with a period of about 11 years.
B)   They vary irregularly, with no periodicity.
C)   They increase and decrease with a precise period of 11.1 years.
D)   They increase for about 11 years and then decrease again over the next 11 years.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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7 years ago
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doit_the_clown Author
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7 years ago
Thanks
my2redeyes
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
larrybrads
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2 hours ago
Smart ... Thanks!
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