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Consider a horizontal square plate capacitor of area 1*1m2, capacitance in vacuum 4 μF, which contains a dielectric material by dielectric constant K=3. The dielectric slides frictionless and is attached via a mass less string and a mass less pulley to a block of mass 1.5 kg. The block pulls the dielectric from the capacitor as it falls. Calculate the speed of the block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across the capacitor after the dielectric is removed is gauged to be 200 V.
A proton accelerates from rest in a uniform electric field of 600 N/C. At one later moment, its speed is 1.50 Mm/s, Find the acceleration of the proton
Two forces, F1 vector and F2 vector, act at a point. F1 vector has a magnitude of 8.40N and is directed at an angle of 65.0 degrees above the negative x axis in the second quadrant. What is the magnitude of the resultant force
Suppose that a grandfather clock a simple pendupum device is running slowly. the time it takes to complete each cycleis longer than it should be. should one shorten or lenghten the pendulum to make the clock keep the correct time? explain?
What is the speed of a beam of electrons when the simultaneous influence of an electric field of 1.56×104V/m and a magnetic field of 4.62×10?3T, What is the period of the orbit
For charging process, the voltage across the capacitor as a function of time is given by Vc = ε[1-exp(-t/τ)]. When the time is twice the time constant, find what percentage of the maximum voltage is on the capacitor
an ideal gas for which cv3r2 is the working substance of a carnot engine. during the isothermal expansion the volume
Three resistors, with values of 3.0, 6.0 and 12.0 ?, respectively, What is the overall resistance of this combination
In an action movie, the heroine is supposed to jump with a motorcycle from the roof of one skyscraper to another one. what minimum initial speed would she need to make the jump
how do the temperature of combustion and the temperatures of collant and exhaust affect the efficiency of automobile
A 76 kg student traveling in a car with a constant velocity has a kinetic energy of 1.1 multiply.gif 104 J. What is the speedometer reading of the car in km/h
A simple model of the Earth includes a dense spherical core of radius 4200 km and a less dense spherical shell of thickness 2180 km, determine the rotational kinetic energy of Earth
Which container has more gas molecules?
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