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Question: 5 you are a researchers at nasa who is tasked...

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5. You are a researchers at NASA who is tasked with designing a balloon to keep some atmospheric measurement devices (payload of m-20 kg) at elevation 10 km above the sea level. If you use Helium as the gas in the balloon, what should be the radius of the balloon? Assume the balloon is of spherical shape. Hint: use standard atmosphere to find the air properties at 10 km elevation. Draw the free body diagram as well

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