If we were to increase the distance between the two point-charges in Q12 above from 1cm to 10cm, then the electric force between them would be

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What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m