The electrostatic force of attraction between two charges, a and b, is proportional to

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Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion