Physics, 13.07.2019 01:20 ErikaS7494
Consider a uniform rope of length l and mass m. one fourth of the rope hangs over the edge of a frictionless table. a force is applied to the end on the table to hold the rope in place. now, the force slowly pulls the rope so that its hanging end rises onto the tabletop. a) find the force necessary to do this as the rope rises to the table. then find the work done by the force. b) instead, consider the mass of the hanging portion to be concentrated at its center of mass, and calculate the work necessary to raise the quarter rope to the tabletop. c) compare the results.
Answers: 1
Physics, 22.06.2019 10:30
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Physics, 22.06.2019 14:20
How many atoms of nitrogen are in the chemical formula ni(w on
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Physics, 22.06.2019 16:00
The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.
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Physics, 22.06.2019 17:30
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
Consider a uniform rope of length l and mass m. one fourth of the rope hangs over the edge of a fric...
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