Magnitude and direction of current in the solution
In an ionic solution, 5.8 x 1015 positive ions with charge +2e pass to the right each second while 6.3 x 1015 negative ions with charge -e pass to the left. What are the magnitude and direction of current in the solution?
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A test of a two-tail hypothesis rejects the null hypothesis at the 5% level of significance. What will the decision be for an appropriate one tail test at the 2.5% level of significance?
A person pulls a toboggan for a distance of 20.0 m along the snow with a rope directed 30.0° above the snow. The tension in the rope is 95.0 N. (a) How much work is done on the toboggan by the tension force?
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The brakesand coasts down the grade with an acceleration in feet per second squared given by a=3.22?0.004v2, where v is the velocity in feet per second. Determine the velocity vB at the bottom B of the grade.
A banking consultant is investigating if the proportion of households with saving above $20,000 has increased from last year's value of 0.2. In a random sample of 200 households, 50 had savings of more than $20,000. What is the p-value for the tes
In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.40 x 107 J at lift-off. What is the work done on the jet by the catapult?
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