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Physics 10 Online
OpenStudy (anonymous):

You are in a hot air balloon, 200 m above the flat Texas plains. you look out towards the horizon. How far out can you see- that is, how far is your horizon?The Earth's radius is about 6400km.

OpenStudy (jamesj):

Step 1: draw a diagram. You should construct a triangle and you should be able to see that the triangle is right-angled. Now it should be relativity easy.

OpenStudy (anonymous):

ok wil ldo. thanks.

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