No teto de um vagão ferroviário, prende-se uma esfera de aço por meio de um fio leve e inextensível. verifica-se que em um trecho retilíneo e horizontal da ferrovia o fio se mantém na posição indicada, formando com a vertical um ângulo de 45⁰. no local, adota-se g=10m/s².
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Physics, 22.06.2019 00:50
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
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Physics, 22.06.2019 03:30
Astudent is working in the lab to determine how time affect impulse the student keeps the force the same in each row but changes impact the time some data is shown witch trial has the greatest a student is working in the lab to determine how time affect impulse the student keeps the fours the same in each row but change is the impact time some data shown witch trial has the greatest impulse
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Physics, 22.06.2019 20:00
Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?
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Physics, 23.06.2019 02:30
Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum.
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No teto de um vagão ferroviário, prende-se uma esfera de aço por meio de um fio leve e inextensível....
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