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Two large, parallel metal plates, each of area A, are oriented horizontally and separated by a distance 3d. A grounded
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Chapter 25 Solutions
Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 10th + WebAssign Printed Access Card for Serway/Jewett's Physics for Scientists and Engineers, 10th, Multi-Term
- Two large, parallel metal plates, each of area A, are oriented horizontally and separated by a distance 3d. A grounded conducting wire joins them, and initially each plate carries no charge. Now a third identical plate carrying charge Q is inserted between the two plates, parallel to them and located a distance d from the upper plate as shown in Figure P20.84. (a) What induced charge appears on each of the two original plates? (b) What potential difference appears between the middle plate and each of the other plates? Figure P20.84arrow_forward(a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a negatively charged Van de Graff terminal? (b) What is unreasonable about this result? (c) Which assumptions are responsible?arrow_forwardA thin conducing plate 2.0 m on a side is given a total charge of 10.0C . (a) What is the electric field 1.0 cm above the plate? (b) What is the force on an electron at this point? (c) Repeat these calculations for a point 2.0 cm above the plate. (d) When the electron moves from 1.0 to 2.0 cm above the plate, how much work is done on it by the electric field?arrow_forward
- A simple pendulum has a small sphere at its end with mass m and charge q. The pendulums rod has length L and its weight is negligible. The pendulum is placed in a uniform electric field of strength E directed vertically upward. What is the period of oscillation of the sphere if the electric force is less than the gravitational force on the sphere? Assume the oscillations are small. FIGURE P24.63arrow_forwardOne end of a light spring with force constant k = 125 N/m is attached to a wall, and the other end to a metal block with charge qA = 2.00 C on a horizontal, frictionless table (Fig. P23.34). A second block with charge qB = 3.60 C is brought close to the first block. The spring stretches as the blocks attract each other so that at equilibrium, the blocks are separated by a distance d = 12.0 cm. What is the displacement x of the spring? Figure P23.34arrow_forwardA small object is connected to a lightweight cord of length L=1.20 m that is tied to a point P, as shown in the figure. The object, string, and point all lie on a frictionless, horizontal table. The object has mass m=.0100kg and charge q= 2.10 uC and is released from rest when the string makes an angle theta=60 with a uniform electric field of magnitude E=260 V/m. Determine the speed in m/a of the object when the string is parallel to the electric field.arrow_forward
- A V K1 d1 K2 d2 Two insulating materials with thicknesses and dielectric constants d, = 6cm, K1 = 6 and d, = 7cm, K2 = 7 are placed tightly in between two conductive parallel plates with surface area A = 1m?. Since the potential difference V = 120V is applied to the conductor plates, find the induced charge on the surface of the insulator with dielectric constant K, = 6. ɛ, = 9x10-12 Nm2arrow_forwardA small ball with charge q = 4.3 μC and mass m = 0.045 kg is suspended from the ceiling by a string of length L = 2 m and is initially at rest. A uniform horizontal electric field E of magnitude 500 V/m is applied to the ball-string system. The ball then begins to move. Ignore air resistance. a. Write an equation for the sum of forces in the direction of motion of the ball when it is at location C in terms of the given symbols. Take counterclockwise as positive. b. What would be the expression for tan(α) using the symbols? c. Find the value of α, in degrees.arrow_forwardTwo concentric spherical conducting shells are separated by vacuum. The inner shell has total charge +Q and radius a, and outer shell has charge -Q and radius b. Using integration of the electric field energy density find the electric energy stored in the system. Take Q = 28 µC, a = 20 cm and b = 70 cm. I 1 The energy, U₁ = 12.582440✔✔ Units J The energy, U₁ a = = Using the obtained energy and formula for the energy stored in a capacitor, U capacitance of the system. The capacitance, Co 3.1154528 X Units Select an answer ✓ Repeat the calculations for the same system with a dielectric material of k = 4.5 inserted in between the shells. The capacitance, C₁ = -Q Units Select an answer ✓ .37489732 X Units pF Q² 20¹ find thearrow_forward
- mh.2arrow_forwardAn electric dipole consists of two particles, each with mass 16 Dalton, and charges ±2e. The particles are initially in equilibrium and at rest, then a pulsed electric field with a width of 25 cm and a constant magnitude of 2.20×106 V/m passes the dipole. For what period of time do the charges experience a force from the electric field?arrow_forwardWhat is the electric field inside a 3.5 microF parallel plate capacitor when it is connected to a 12.0 V battery? The two plates are both 11.0 cm in diameter and 2.0 mm apart. SI base units.arrow_forward
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