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A 11.7 cm radius thin ring carries a uniformly distributed 15.4μc charge. A small 8.6g sphere with a charge of 1.5μc is placed exactly at the center of the ring and given a very smallpush so it moves along the ring axis (+x axis)How fast will the sphere be moving when it is 1.5 m from the centerof the ring (ignore gravity)?
What is the electric force between a glass ball that has +2.9 µC of charge and a rubber ball that has -4.7 µC of charge when they are separated by a distance of 3.8 cm?
You are a space traveller and you land on the surface of a new planet. You decide to drill a tunnel through the center of the planet to the opposite side of the planet. How long will it take to make it to the other side of the planet
An 1590 kg car stopped at a traffic light is struck from the rear by a 873 kg car and the two become entangled. what is the speed of the entangled mass after the collision
In open heart surgery a much smaller amount of energy will defibrillate the heart, What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 55.0 J of energy
The dipole moment of a water molecule in liquid water is 6.2×10−30 C·m, and the effective diameter of a water molecule is 2.8×10−10 m. In an earlier homework problem the effective dipole charge separation for water was calculated as 1.9×10−11 m.
A 20-mC charge is 4 cm above an unknown charge q. The electric intensity at a point 1 cm above the 20-mC charge is 2.20x109 N/C and is directed upward. What are the magnitude and sign of the unknown charge?
A chair of weight 130 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 fixed at an angle of 39.0below the horizontal and the chair slides along the floor.
two conducting spheres, one of radius 6.0 cm, and the other of radius 120 cm, each have a charge of 20 nC, calculate the surface charge density of each sphere
A uniform magnetic field B is perpendicular to the plane of rotation. What is the potential difference between the ends of the bar
You stand on a frictionless platform that is rotating with an angular speed of 7.2 rev/s. What is the change in kinetic energy of the system
You have a 200 resistor, a 0.400 H inductor, a 5.00 F capacitor, and a variable-frequency ac source with an amplitude of 3.00 V. At what frequency will the current in the circuit be greatest
A spring stretches by 0.0240 m when a 3.40-kg object is suspended from its end. How much mass should be attached to this spring
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