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A charge +q is located at the origin, while an identicalcharge is located on the x axis at x = +0.643 m.A third charge of +2 q is located on the x axisat such a place that the net electrostatic force on the charge atthe origin doubles, its direction remaining unchanged. What is the distance from the third charge to the origin?
A 110 kg mail bag hangs by a vertical rope 4.0 m long. A postal worker then displaces the bag to a position 2.0 m sideways from its original position, always keeping the rope taut. As the bag is moved to this position, how much work is completed by t..
one mole of water molecules consists of 1 mole of oxygen (16 g) and 2 moles of hydrogne (1 g each). how many moles of water did you make
block A (mass 2.28 kg) rests on a tabletop. It is connected by a horizontal cord passing over a light, frictionless pulley to a hanging block B (mass 2.57 kg ), evaluate the tension in the cord
Picture a uniform disk with a circular hole cut out of it. The disk has a radius of 4.00 m. What is the x-coordinate of the center of gravity of the system
q1. a small turtle moves at a speed of 165 furlongs per fortnight. find out the speed of the turtle in centimeters per
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=59600 N. What is the magnitude of the lift force
A ball with a mass of 0.605 is initially at rest. It is struck by a second ball having a mass of 0.405 , initially moving with a velocity of 0.255 toward the right along the axis, What is the direction of the velocity of the 0.605 ball after the co..
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
A 0.7 kW heater is designed to operate at 210 V. Assume that its resistance is constant. What is the power dissipated in this resistor if it operates at 120 V
When a softball player swings a bat, she accelerates it from rest to an angular velocity of 10 rad/s in a time of 0.27686 seconds. find the magnitude of the torque she applies to the end of the bat
Object A has a mass of 10.0 kg and is located at xA = 0.0 m on the x-axis. Object B has a mass of 15.0 kg, What is the center of mass of the collection masses
A cubical box of widths Lx = Ly = Lz = L = 4.82 nm contains eight electrons. What is the energy of the ground state of this system? Assume that the electrons do not interact with one another, and do not neglect spin.
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