A spherical balloon contains air at temperature T0 and pressure P0. The balloon material is such that the instantaneous pressure inside is proportional to the square of the diameter.
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A spherical balloon contains air at temperature T0 and pressure P0. The balloon material is such that the instantaneous pressure inside is proportional to the square of the diameter. A spherical balloon contains air at temperature T0 and pressure P0. The balloon material is such that the instantaneous pressure inside is proportional to the square [...]