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,...

See similar textbooks

Similar questions

Given two particles with 2.00-C charges as shown in Figure P25.19 and a particle with charge q = 1.28 10-18 C at the origin, (a) what is the net force exerted by the two 2.00-C; charges on the charge q? (b) What is the electric field at the origin due to the two 2.00-C particles? (c) What is the electric potential at the origin due to the two 2.00-C particles?
It is shown in Example 24.7 that the potential at a point P a distance a above one end of a uniformly charged rod of length lying along the x axis is V=keQlln(l+a2+l2a) Use this result to derive an expression for the y component of the electric field at P.
If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, will the panicle (a) accelerate in the positive x-direction, (b) accelerate in the negative x-direction, or (c) remain at rest?
If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, will the panicle (a) accelerate in the positive x-direction, (b) accelerate in the negative x-direction, or (c) remain at rest?
An electron is released from rest in a uniform electric field. Determine whether the following quantities increase, decrease, or remain unchanged as the electron moves. Indicate your answers with I (increase), D (decrease), or U (unchanged), respectively. (a) The electric potential at the electrons location (b) The electrons associated electric potential energy (c) Its kinetic energy (d) Its total energy.
Given two particles with 2.00-C charges as shown in Figure P20.9 and a particle with charge q = 1.28 1018 C at the origin, (a) what is the net force exerted by the two 2.00-C charges on the test charge q? (b) What is the electric field at the origin due to the two 2.00-C particles? (c) What is the electric potential at the origin due to the two 2.00-C particles? Figure P20.9
A CD disk of radius (R = 3.0 cm) is sprayed with a charged paint so that the charge varies continually with radial distance r from the center in the following manner =(6.0C/m)r/R ?. Find the potential at a point 4 cm above the center.
An electron is released from rest in a uniform electric field. Determine whether the following quantities increase, decrease, or remain unchanged as the electron moves. Indicate your answers with I (increase), D (decrease), or U (unchanged), respectively. (a) The electric potential at the electrons location (b) The electrons associated electric potential energy (c) Its kinetic energy (d) Its total energy.
Can a particle move in a direction of increasing electric potential, yet have its electric potential energy decrease? Explain
Your friend gets really excited by the idea of making a lightning rod or maybe just a sparking toy by connecting two spheres as shown in Figure 7.39, and making R2so small that the electric field is greater than the dielectric strength of air, just from the usual 150 V/m electric field near the surface of the Earth. If R1is 10 cm. how small does R2to be, and does this seem practical? (Hint: recall the calculation for electric field at the surface of a conductor from Gauss's Law.)
Two particles, with charges of 20.0 nC and 20.0 nC, are placed at the points with coordinates (0, 4.00 cm) and (0, 4.00 cm) as shown in Figure P20.19. A particle with charge 10.0 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 2.00 1013 kg and a charge of 40.0 nC, is released from rest at the point (3.00 cm, 0). Find its speed after it has moved freely to a very large distance away.
A uniformly charged insulating rod of length 14.0 cm is bent into the shape of a semicircle as shown in Figure P25.44. The rod has a total charge of 7.50 C. Find the electric potential at O, the center of the semicircle.