4- A charged ball of mass (1.5 g) is suspended on a light string in the presence of a uniformexternal electric field, as shown in figure. At equilibrium the angle of the string with thevertical (0 = 35°) and the tension in the string is (0.004 N). If the charge of the ball equals(5 µC), find the magnitude and direction of the electric field intensity.(Ans. E=2330 N/C with angle 78.7° with x-axis)///E Question 5Two particles, with charges of 20 nC and -20 nC, are placed at the points withcoordinates (0, 4 cm) and (0, -4 cm) as shown in Figure 4. A particle with charge 10 nC islocated at the origin.(a). Find the electric potential energy of the configuration of the three fixed charges.(b). A fourth particle, with a mass of 2 x 10-13 kg and a charge of 40 nC, is released fromrest at the point (3 cm, 0). Find its speed after it has moved freely to a very largedistance away.20.0 nC4.00 cm10.0 nC3.00 cm40.0 nC4.00 cm-20.0 nCFigure 4.

Given: Mass (m) = 1.5 g; Angle = 35o Tension (T) = 0.004 N Charge (q) = 5 μC = 5 x 10-6 C

4- A charged ball of mass (1.5 g) is suspended on a light string in the presence of a uniform external electric field, as shown in figure. At equilibrium the angle of the string with the vertical (0 = 35°) and the tension in the string is (0.004 N). If the charge of the ball equals (5 µC), find the magnitude and direction of the electric field intensity. %3D (Ans. E=2330 N/C with angle 78.7° with x-axis)

4- A charged ball of mass (1.5 g) is suspended on a light string in the presence of a uniform external electric field, as shown in figure. At equilibrium the angle of the string with the vertical (0 = 35°) and the tension in the string is (0.004 N). If the charge of the ball equals (5 µC), find the magnitude and direction of the electric field intensity. %3D (Ans. E=2330 N/C with angle 78.7° with x-axis)

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter20: Electric Potential And Capacitance

Section: Chapter Questions

Problem 19P: Two particles, with charges of 20.0 nC and 20.0 nC, are placed at the points with coordinates (0,...

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

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4- A charged ball of mass (1.5 g) is suspended on a light string in the presence of a uniform
external electric field, as shown in figure. At equilibrium the angle of the string with the
vertical (0 = 35°) and the tension in the string is (0.004 N). If the charge of the ball equals
(5 µC), find the magnitude and direction of the electric field intensity.
(Ans. E=2330 N/C with angle 78.7° with x-axis)
///
E

Question 5
Two particles, with charges of 20 nC and -20 nC, are placed at the points with
coordinates (0, 4 cm) and (0, -4 cm) as shown in Figure 4. A particle with charge 10 nC is
located at the origin.
(a). Find the electric potential energy of the configuration of the three fixed charges.
(b). A fourth particle, with a mass of 2 x 10-13 kg and a charge of 40 nC, is released from
rest at the point (3 cm, 0). Find its speed after it has moved freely to a very large
distance away.
20.0 nC
4.00 cm
10.0 nC
3.00 cm
40.0 nC
4.00 cm
-20.0 nC
Figure 4.

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