9·-/1 pointsSerCP11 16.2·P.014My Notes Ask Your TeacherThree charges are situated at corners of a rectangle as in the figure below. How much energy would be expended in moving the 8.0 μC charge to infinity?8.0 HC6.0 cm8.0 cm4.0 uCNeed Help? ReadIt

Energy expended in moving the charge from infinity is,

Answered: 9· -/1 points SerCP11 16.2·P.014 My…

Inquiry into Physics

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Chapter7: Electricity

Section: Chapter Questions

Problem 3P: A particle having a positive charge of C experiences an upward force of 8 N when placed at a certain...

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A particle having a positive charge of C experiences an upward force of 8 N when placed at a certain location in space. What is the magnitude and direction of the electric field at that point? What would be different about your answer if the particle possessed a negative charge of C?
A simple and common technique for accelerating electrons is shown in Figure 18.55, where there is a uniform electric field between two plates. Electrons are released, usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to continue moving. (a) Calculate the acceleration of the electorn if the field strength is 2.50104 N/C. (b) Explain why the electron will not be pulled back to the positive plate once it moves through the hole.
Why does a car always attract dust right after it is polished? (Note that car wax and car tires are insulators.)
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Integrated Concepts Figure 18.57 shows an electron passing between two charged metal plates that create an 100 N/C vertical electric field perpendicular to the electron's original horizontal velocity. (These can be used to change the electron’s direction, such as in an oscilloscope.) The initial speed of the electron is 3.00106 m/s, and the horizontal distance it travels in the uniform field is 4.00 cm. (a) What is its vertical deflection? (b) What is the vertical component of its final velocity? (c) At what angle does it exit? Neglect any edge effects.
If a negatively charged particle is placed at point B in Figure 16.3 and given a very small kick to the right, what will its subsequent motion be? Will it (a) go to the right and not return, (b) go to the left, (c) remain at point B, or (d) oscillate around point B?
Rocket observations show that dust particles in Earths upper atmosphere are often electrically charged. (a) Find the distance separating two dust particles if each has a charge of +e and the Coulomb force between them has magnitude 1.00 1014 N. (b) Calculate the mass of one of the dust panicles if this Coulomb force would accelerate it at 4.50 108 m/s2. (In the upper atmosphere, effects from other nearby charges typically result in a small net force and acceleration.)
If the voltage between two points is zero can a test charge be moved between them with zero net work being done? Can this necessarily be done without exerting a force? Explain.
Review. Two insulating spheres have radii 0.300 cm and 0.500 cm, masses 0.100 kg and 0.700 kg, and uniformly distributed charges 2.00 C and 3.00 C. They are released from rest when their centers are separated by 1.00 m. (a) How fast will each be moving when they collide? (b) What If? It the spheres were conductors, would the speeds be greater or less than those calculated in part (a)? Explain.
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9· -/1 points SerCP11 16.2·P.014 My Notes Ask Your Teacher Three charges are situated at corners of a rectangle as in the figure below. How much energy would be expended in moving the 8.0 μC charge to infinity? 8.0 HC 6.0 cm 8.0 cm 4.0 uC Need Help? ReadIt