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2. A cube of mass 2.5 kg and 12 cm on a side is at the...

2. A cube of mass 2.5 kg and 12 cm on a side is at the bottom of a pool of water resting on a scale.

a) What does the scale read in N? A massless balloon full of air is attached to the object (assume the air is at atmospheric pressure).

b) What is the radius of the balloon such that the scale reads 0 N?

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