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An air-filled parallelplate capacitor with a plate spacing of 1.50 cm has a capacitanceof 4.70 mF. The plate spacing is nowdoubled and a dielectric is inserted, completely filling the spacebetween the plates. As a result the capacitance becomes 13.3mF. Calculate the dielectric constant of the inserted material.
A mass of 0.2 kg attached to a spring oscillates on a frictionless horizontal surface. Its motion is described by x = 0.05 m cos(50 rad/s t + 1.57 rad). find the force constant and the mechanical energy
Consider a cargo ship, with a mass of 5.0×10^8kg . If it is pushed by a tugboat motor (force 8.0×10^6 N), what will be the magnitude of its acceleration
A box of mass 2.50kg is sliding at a constant speed down an inclined plane that is inclined at 25 degrees. What is the force of friction acting on the box
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 84 rad/s. The wheel is run at that angular velocity for 37 s and then power is shu..
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 5.20 m/s2 over a distance of 20.4 cm. Find the total time the block is in motion
In a rectangular corrdinate system, a postitve point charge q = 6.00nC is placed at the point x = +.150 m, y = 0, and an identical point charge is placed at x = -.150 m, y = 0.
A large positively-charged object with charge q = 3.75 ?C is brought near a negatively-charged plastic ball suspended from a string of negligible mass. what is the angle the string makes with the vertical
oscillating voltage applied to an LRC circuit, V=110cos(120Ï€t), R = 1kΩ, L = 10mH, C = 4700 µF. find the phasor angle
A Simple Harmonic Oscillator consisting of a 305 g mass and a spring is set oscillating on a smooth flat surface. If the greatest speed of the mass is 1.50 m/s and the spring constant of the spring is 2.00 N/m.
A particle's acceleration is described by the function ax =(10-t)m/s^2, where t is in s. At what time is the velocity again zero
what is the bullets time in the air. The heat capacity of ice is 2.09 and that of steam is 2.01.
In the meantime, this means the refrigerator produces 1.2177E+4 J of thermal energy that it expels into the kitchen as a result. What is the total work done by the compressor motor in the refrigerator
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