Electric force on a sphere
Question: Two small plastic spheres each have a mass of 2.0 g and a charge of -50.0 nC. They are placed 2.0 cm apart.
By what factor is the electric force on a sphere larger than its weight?
Express your answer using two significant figures.
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In view of these data, the brightness of Delta Cepheid at time t, where is measured in days, has been modeled by the function (a) Find the rate of change of the brightness after days.
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The variable distribution costs are for transportation to the retail stores. The current production and sales volume is 20,000 per year, which is 80% of capacity.
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