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Damon divided a circle into nine equal parts. Use the provided circular protractor to explain how to decompose Damon’s circle into nine equal parts and indicate the measure of each angle formed. Provide calculations that justify your work.

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?