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    A helium filled balloon is tied to a 2.0 meter long, 0.050-kg string. The balloon is spherical with a radius of 0.40 m. When released, it lifts a length (h) of the string and then remains in equilibrium as in the figure. Now determine the value of (h). When deflated, the balloon has a mass of 0.25 kg. (Note: Only that part of the string above the floor contributes to the load being held up by the balloon.)

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    https://brainmass.com/physics/solar-system/helium-filled-balloon-37811

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    First, you will need to find the mass of the displaced air.

    Using 1.29kg/m^3 for the density of air at the earth's surface (this number may vary from ...

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    This solution includes calculations and answers. 138 words.

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