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Two identical parallel-plate capacitors, each with capacitance C, are charged to potential difference ?V and connected in parallel. Then the plate separation in one of the capacitors is doubled. (Use DeltaV for ?V and C as necessary.) (a) Find the total energy of the system of two capacitors before the plate separation is doubled. U = (b) Find the potential difference across each capacitor after the plate separation is doubled. ?V ' = (c) Find the total energy of the system after the plate separation is doubled. U ' = (d) Reconcile the difference in the answers to parts (a) and (c) with the law of conservation of energy.
A series circuit has a 50 Hz ac source, a 20 ohm resistor, a 0.6 H inductor, and a 40 ?F capacitor, the voltage amplitude of the source is closest to
what is the new force between the objects. if Andromeda contains roughly the same number of stars and attracts the Milky Way with a gravitational force of 2.4*10^30N.
A small compass is held horizontally, the center of its needle a distance of 0.140 m directly north of a long wire that is perpendicular to the earth's surface, What direction does the current in the wire flow, toward or away from the earth's surfa..
The intensity on the screen at a certain point in a double-slit interference pattern is 72.0% of the maximum value. What minimum phase difference (in radians) between sources produces this result
A flashlight bulb operating at a voltage of 5.9 V has a resistance of 6 O. How many electrons pass through the bulb filament per second
A series RLC circuit consists of a 107 ohm resistor, a 15.0 mH inductor, and a 0.500 nF capacitor. What is the power supplied to the circuit if w =1/2wo
Calculate the fuel utilization and infinite multiplication factor for a fast reactor consisting of a mixture of liquid sodium and plutonium
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
The coefficient of kinetic friction between each brake pad and the rim is μk = 0.85. What is the magnitude of normal force that each brake pad applies to the rim.
The force of attraction between a -20.0 ?C and +80.0 ?C charge is 4.00 N, What is the separation between these two charges
A solenoid that is 75 cm long produces a magnetic field of 1.4 T within its core when it carries a current of 7.6 A. How many turns of wire are contained in this solenoid
A ball is dropped from rest from the top of a 6.35-m-tall building, falls straight downward, collides in-elastically with the ground, How many bounces can the ball make and still reach a windowsill that is 2.26 m above the ground
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