You bring a negatively charged rubber rod close to a grounded conductor without touching it. Then you disconnect the ground. What is the sign of the charge on the conductor after you remove the charged rod? negative positive no charge cannot be determined
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You bring a negatively charged rubber rod close to a grounded conductor without touching it. Then you disconnect the ground. What is the sign of the charge on the conductor after you remove the charged rod?
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- Two small identical conducting spheres are placed with their centers 0.42 m apart. One is given a charge of 10 ✕ 10-9 C, the other a charge of -14 ✕ 10-9 C. (a) Find the electrostatic force exerted on one sphere by the other. N(b) The spheres are connected by a conducting wire. Find the electrostatic force between the two after equilibrium is reached. NZ is touched to Y, then separated. Z is next touched to X, then separated. The final charge remaining on X will be?Two spherical objects are separated by a distance of 1.52 x 103 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object experiences an electrostatic force that has a magnitude of 2.24 x 10-20 N. How many electrons did it take to produce the charge on one of the objects? Number Units
- The diagram below shows two metal spheres taken from Newton's cradle and separated by a distance of 0.1 meters. Thẻ charge on sphere A is +6.0 x 10 3 coulomb and the charge on sphere B is +3.0 x 10 3 coulomb. -0.1 m- A B Which statement best describes the electrical force on the spheres? O It has a magnitude of 162,000 N and is repulsive. O It has a magnitude of 162,000 N and is attractive. O It has a magnitude of 16,200 N and is attractive. O It has a magnitude of 16,200 and is repulsive.A sphere with a radius of 1.5cm hangs by an insulating thread. The sphere is attracted to a positively charged rod held near the sphere. a) If the ball is made of an insulating material, what can you say about the charge on the sphere? Be specific and explain your answer. b) If the ball is made of an conducting material, what can you say about the charge on the sphere? Be specific and explain your answer.P10
- b) Calculate the net force (magnitude and direction) exerted on charge q by the other four charges, in terms of q, Q, d, and e0. You may draw the force vector to indicate the direction. c) If the charge q is released from rest, and the four other charges held fixed, will the charge q ever “escape” to infinitely far away (assuming an infinite amount of time can pass)? Justify your answer.A small plastic ball with a mass of 6.65 10-3 kg and with a charge of +0.149 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the vertical. The area of each plate is 0.0138 m2. What is the magnitude of the charge on each plate? CA conducting sphere of radius r1 = 0.18 m has a total charge of Q = 1.9 μC. A second uncharged conducting sphere of radius r2 = 0.46 m is then connected to the first by a thin conducting wire. The spheres are separated by a very large distance compared to their size.Randomized Variables r1 = 0.18 mr2 = 0.46 mQ = 1.9 μC What is the total charge on sphere two, Q2 in coulombs?
- A charged 3.60 g glass bead hangs suspended in the air by an electric field. If the bead was charged by the removal of 7.10×1010 electrons, what must the electric field magnitude be? 2.56×1011 N/C 3.11×106 N/C 4.97×10-13 N/C 3.17×108 N/CIn the picture below, the rod is positively charged. Electrically speaking, water is a "polar molecule"; each water molecule can be imagined as a negative charge (the oxygen end) and a positive charge (the hydrogen end), each of approximate magnitude 2e, separated by an approximate distance of 2 x10-1" m. a) Explain how a charged rod can exert an electric force on water molecules that have zero net charge. Include a picture of a typical water molecule in the stream of water adjacent to the rod, showing its orientation relative to the rod. b) If the charge of the rod is +32 nC and that charge is located approximately 2.0 cm from a water molecule in the stream, what is the maximum possible net electric force that the rod could exert on the molecule?