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If you increase the voltage in a series circuit what happens to the current? Point charges of 5micro and -3micro charge are placed 0.250m apart.Where can a third charge be placed so that the net force on it is zero? Why is a centroid in math commonly known as "P"? Explain the much higher mobility of nitrate ( NO3-) than calcium (Ca2+) in soils.? Find the exact value of the equation in the interval [0, 2pi) 4sin(x)Cos(x)=1?