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Two spheres are mounted on identical horizontal springs and rest on a frictionless table, as in the drawing. When the spheres are uncharged, the spacing between them is 0.0500 m, and the springs are unstrained. When each sphere has a charge of +1.00 µC, the spacing doubles. Assuming that the spheres have a negligible diameter, determine the spring constant of the springs.
A block of mass m is at restlying on the face of an incline plane.Theplane makes an angle (theta) with the horizontal. Draw the free-body diagram showing all forces acting on theb lock.
A volleyball play jumps into the air by first lowering his body by. .4 m and then accelerating by straightening his legs rapidly. what is the force exerted by his feet on the floor
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 8.0 km away. Find the power used to heat the wires if the power is transmitted at 1300 V
A large oak tree produces 2.2 metric tons of wood over a 50 year growth lifespan. find the tree's efficiency for converting solar energy to wood heating value
A satellite is in a circular orbit around an unknownplanet. The satellite has a speed of 1.60 x 104m/s, and the radius of the orbit is 5.45 x 106 m. What is the orbital speed of the second satellite
Heat flows into an ideal gas at a constant volume. The pressure increases from 1.5 atm to 5.5 atm. What is the total change in internal energy
Two wheels have the same mass and radius of 4.5 kg and 0.39 m, respectively. determine the net external torque that acts on each wheel
Two 10.0 cm -diameter electrodes 0.52 cm apart form a parallel-plate capacitor. What is the charge on each electrode after insulating handles are used to pull the electrodes away from each other until they are 1.3 cm apart
A certain car battery with a 14.0 V emf has an initial charge of 195 A•h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how long in hours can it deliver energy at the rate of 184 W.
Radar at an airport tells an air traffic controller that a light airplane is approaching at 220 km/h at 33° north of east. Instruments also tell the air traffic controller that there is a wind blowing at 42 km/h at 25° west of south. What is th..
A charged particle of mass m and positive charge q moves in a uniform constant electric and magnetic fields, E pointing in the y direction and B in the z direction, Find the electric force on the particle
A 29.0 kg child on a 1.00 m long swing is released from rest when the ropes of the swing make an angle of 31.0° with the vertical. Neglecting friction, find the child's speed at the lowest position.
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