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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.
An X-ray beam of wavelength 0.01nm strikes a target containing free electrons. determine The change in wavelength of the scattered x-ray
An air-filled toroidal solenoid has a mean radius of 13.0 cm and a cross-sectional area of 5.80cm^2. How many turns does the winding have
An electron (q=-e) completes half of a circular orbit of radius r around a nucleus with Q=+3e. By how much does the electric potential energy change
A uniform metal rod, with a mass of 3 {rm kg} and a length of 1.2 {rm m}, is attached to a wall by the hinge at its base. A horizontal wire bolted to the wall 0.51 m above the base of the rod holds the rod at an angle of 25{rm ^circ} above the hor..
Calculate the escape velocity for a planet that has twice the mass of Earth and is half the size of Earth
q1. runner a is at first 5.4 km west of a flagpole and is running with a constant velocity of 2.6 kmh due east. runner
An airplane is flying with a velocity of 87.0m/s at an angle of 20.0 degrees above the horizontal. How far from the dog will the suitcase land
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What is linear charge density of the insulating shell
If the free ends of the two cylinders are maintained at constant temperatures of 93?C (steel) and 28?C(copper), how much heat will flow through the cylinders in 25 min
A 28-m3 tank is filled with 2910 moles of an ideal gas. The temperature of the gas is initially 302 K, but it is raised to 740 K. find the change in the pressure of the gas inside the tank
Three point charges are located on the x-axis. The first charge, q1= 10uC, is at x= -1.00m; the second charge, q2 = 20.0 uC,, Find the force that each charge is subjected
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