1/29/2016 11:55 PM A 28.5/100 Gradebook Print Calculator Periodic Table Question

Question

1/29/2016 11:55 PM A 28.5/100 Gradebook Print Calculator Periodic Table Question 6 of 12 Map Presented by Physics opensti aping learning Using the symmetry of the arrangement, determine the direction of the force on q in the figure below, given that qa qb +8.15 AMC, qc qd 8.15 UC, and q is positive. O down O eft down and right O right O up O up and left O down and left O up and right Calculate the magnitude of the force on the charge q, given that the square is 10.50 cm on a side and q 2.15 Number O Previous ® Give Up & View Solution 2 Answer Next Ext Check Hint

Explanation / Answer

down

F = kQq / d²

distance from q to each corner is d = 10.5cm * 2/2 = 7.42 cm

and the angle from q's direction of motion to each charge is 45º, so

F = 4 * 8.99e9N·m²/C² * -2.15e-6C * 8.15e-6C * cos45º / (0.0742m)²

F = 80.92N

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