Physics, 19.03.2020 19:18 abhibhambhani

How many helium-filled balloons would it take to lift a person? Assume the person has a mass of 80kg and that each helium-filled balloon is spherical with a diameter of 33 cm. ?

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How many helium-filled balloons would it take to lift a person? Assume the person has a mass of 80kg...