An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. the spring stretches by 0.250 m. the spring is then cut into two identical springs of 50 coils each. as the drawing shows, each spring is attached between the ceiling and the object. by how much does each spring stretch?
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When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)
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An object is attached to the lower end of a 100-coil spring that is hanging from the ceiling. the sp...
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