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A charged isolated metal sphere of diameter 24.0 cm has a potential of 7400 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere.
Consider a hoop of mass 2.1 kg and radius 0.57 m that rolls without slipping down an incline. What forces act on the hoop
A student constructs an astronomical telescope with a magnification of 10. what is the resulting length of the telescope
A 27.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 35.0° with the vertical, Neglecting friction, find the child's speed at the lowest position
q1. a chair of mass 14.0 kg lies atop a horizontal floor the floor is not frictionless. you push on the chair with a
A rock is thrown horizontally with a speed of 16 m/s from a vertical cliff of height 32 m, What is the velocity (magnitude and direction counterclockwise from the +x-axis, which is the initial horizontal direction in which the rock was thrown) of t..
The magnetic force per meter on a wire is measured to be only 27% of its maximum possible value.Calculate the angle between the wire and the magnetic field.
Two small plastic spheres, one charged to 18nC and the other to ? 18nC , are connected by a 30-mm-long insulating rod. What is the maximum possible torque on the dipole
A basketball player is standing on the floor 10.0 m from the basket. The height of the basket is H = 3.05 m, and he shoots the ball at an angle, ? = 36.4°, with the horizontal from a height of h = 1.82 m.
As you walk across a synthetic-fiber rug on a cold, dry winter day, you pick up an excess charge of -56?C, What is the charge on the rug as a result of your walking across it
Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 15.0 cm) 10.0 cm away from an object. Find the image distance and the magnification. explain the image that he observes.
A 3.0 mW laser produces a beam of light with a diameter of 2.6 mm shines its light on a perfectly absorbing surface. What is the radiation pressure exerted by the beam
A rabbit runs in a straight line with a velocity of +1.6 m/s for a period of time, rests for 9 s, and then runs again along the same line at +0.55m/s for an unknown amount of time. The rabbit travels a total distance of 1116m, and its average spee..
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