Created by StemPy LabTwo soap bubbles of radii and are in a vacuum. They touch and join into a single bubble, with the temperature staying the same. The radius of the new bubble is
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← Treat the Earth as a uniform solid sphere of radius R. Which graph shows how the acceleration due to gravity, g, changes with the distance r from the centre of the Earth, from the centre to well outside the surface?A gas is taken round the cycle shown in the pressure-volume diagram. On the diagram the cycle is a circle, running clockwise. The pressure goes between 1 × 10⁵ Pa and 3 × 10⁵ Pa, and the volume between 1 × 10⁻³ m³ and 3 × 10⁻³ m³. The net heat absorbed by the gas in one cycle is closest to →
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