Answers edited by Ed Hitchcock
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Question #88ca9

Question #28721

Question #a52b1

What are the receiving chambers of the heart and what are the discharging chambers?

What is a planetary nebula made of?

How many grams are in 5.67 ng?

How do you find the maximum area of rectangle with 80ft perimeter?

Given that y varies directly with x, and x = 15, y = 9, how do you write a direct variation equation that relates x and y?

How powerful are today's telescopes compared to some of the first used to look at the heavens?

What percent of 33.5 is 21?

How strong is the force of gravity on earth?

Question #5ced9

Why does earth's distance from the sun change?

Question #3cc11

What makes a nebula planetary and what makes a nebula diffuse? Is there any way to tell if they are Diffuse or Planetary just by looking at a picture? What are some Diffuse Nebulae? What are some Planetary Nebulae?

What is #(pi)/4 # radians in degrees?