# classical mechanics

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Buoyant Force of a Balloon
(9 points possible)

Helium balloons are used regularly in scientific research. A typical balloon would reach an altitude of 35.0 km with an air density of kg/m . At this altitude the helium in the balloon would expand to 540000.0 m . Find the buoyant force on the ballon.

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• classical mechanics -

• classical mechanics -

anyone know?

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