18- chapter25-question4 A charge of +3.0 µC is distributed along the circumference of a circle with a radius of 20 cm. How much external energy (in Joule) is required to bring a charge of 25 µC from infinity to the center of the circle? (k = 9 x 10° N m2/C²) Option1 Option2 Option3 Option4 Option5 5.4 3.4 4.3 2.7 6.8 a) O Option4 b) O Option5 c)O Option2 d) O Option1 e) Option3 Boş bırak
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- 2. An a particle has a positive charge of 2e and a mass of 6.6 × 10-27 kg. With what velocity would an a particle reach the negative plate of a parallel-plate apparatus with a potential difference of 2.0 x 103 V (a) if it started from rest at the positive plate (b) if it started from rest at a point halfway between the platesObject A and Object B are neutral and were rubbed against each other with the aim of facilitating charging by friction. In the process Object A gains 100 quadrillion (1000 trillion) electrons. Which of the following is/are valid? Select all correct options. a. Object B has a charge of -0.016020C b. Object B has a charge of 0.190200C c. Object A has a charge of 0.016020C d. Object A has a charge of -0.052866C e. Object A has a charge of -0.016020C f. Object B has a charge of 0.016020C g. Object A has a charge of -8.602000C h. Object B has a charge of 0.113742C9
- 4) A small plastic ball is suspended by a 0.30 m long thread in a uniform, horizontal electric field as shown in the figure. An electric field of 1,000 V/m is directed toward the right. The ball has a mass of 2.0x10 kg. If the ball is in equilibrium when the string makes an angle of 12° with the vertical as shown, what is the net charge on the ball? Clearly draw and label all forces and show how you arrive at your result. 0 E-1.00 x 10' N/C L He tot par m5. Point A is 40 cm north of a + 100 C point charge, and point B is 50 cm east of the charge as shown in the adjacent figure.(5 pts) A a. Determine V8 - VA b. How much external work would be required to move a +5 C from point A to point B. c. Determine EB - EA 100 C 40 cm 50 cm с B 30 CM** 44. A square insulating plate, 2 meters by 2 meters, lies flat on the floor. A total charge Q = 8 x 10-8 C is distributed uniformly on the sheet. A pith ball (a small non-conducting ball made of a light spongy plant material called "pith"), also with charge Q = 8 × 10-8 C, is fixed 50 cm directly above the center of the plate. Point A is located 5 cm from the plate, directly below the pith ball, as shown. Pith ball 0.50 m X A 0.050 m↑ +++ +++ -++++ a) What is the electric field at A due to the plate (magnitude and direction)? b) What is the electric field at A due to the pith ball (magnitude and direction)? c) What is the net electric field at A (magnitude and direction)? d) What force (magnitude and direction) would an electron experience if it were located at point A? 1
- 4. Examine the charge distribution shown 9₁ +4.0 x 105 C 4.0 m 9₂-4.0 x 105℃ 3.0 m N a) What will the net force be on a third charge of q3 = -5.0x10-5C, placed at point Z? b) What will the total electric potential energy be if a third charge of q3 = -5.0x10-5C is placed at point Z?11. ◆-2 points SerCP11 16.2·P021. My Notes Ask Your Teacher A tiny sphere of mass 7.20 mg and charge-2.80 nC is initially at a distance of 1.64 μm from a fixed charge of +8.45 nC. (a) If the 7.20-mg sphere is released from rest, find its kinetic energy when it is 0.500 μm from the fixed charge (b) If the 7.20-mg sphere is released from rest, find its speed when it is 0.500 μm from the fixed charge. m/s Need Help? ReadIt Submit Answer Save Progress Practice Another VersionProblem 7 An electron is placed in a uniform electric field of 0.15 N/C. Assume that the velocity of the electron is zero at t= 0. What is the velocity of the electron at t = 1 milliseconds? A) 5.3 × 10^7 m/s B) 8.8× 10^6 m/s C) 5.2× 10^7 m/s D) 2.6 × 10^7m/sE) 7.6 × 10^7 m/s
- 3. At a specific point in time, three particles have charge values and locations listed below: Charge #1 is located at r₁ = (-1.80 )cm and has a charge of -2.00 x 10-° C. Charge #2 is located at ₂ = (-1.80 )cm and has a charge of -9.20 x 10° C. Charge #3 is located at = (3.40 - 9.60)cm and has a charge of +5.40 x 106 C. Note: the following calculations are for the moment in time corresponding to the information listed above. The locations before and after this moment in time are irrelevant for this problem. 3a. What is the vector for the total electrostatic force exerted on charge 1 from the other two charges? 3b. What is the magnitude of the vector for the total electrostatic force on charge 1? 3c. What is the angular direction (in standard convention, CCW from positive x axis) of the vector for the total electrostatic force on charge 1?3. An isolated system consists of two metal spheres, with sphere 2 having twice the radius of sphere 1. Both spheres are initially charged as shown in the initial figure. The two spheres are then brought into contact with each other so that charge, in the form of electrons, is transferred between them. The spheres are then separated as shown in the final figure, where they have unknown charges, q and q2. Since sphere 2 has twice the radius, it will have twice the amount of charge than sphere 1 in the final state. Find q, q and the number of electrons transferred between the spheres. Hint: The net charge of the two-sphere system is conserved, since it is an isolated system. initial electron transfer between spheres final 91 = +12.0 μC 9₁ = ? q2 = -3.00 μC 9₂ = ?Question 14 of 35 A particle that carries a net charge of-41.8 uC is held in a constant electric field that is uniform over the entire region. The electric field vector is oriented 25.2° clockwise from the vertical axis, as shown in the figure. If the magnitude of the electric field is 4.32 N/C, how much work is done by the electric field as the particle is made to E move a distance of d = 0.556 m straight up? d. 25.2° work: J What is the potential difference AV between the particle's initial and final positions? AV =