Physics, 24.03.2021 01:00 sweetbee633
What is the mechanical efficiency of a pulley that requires Time to use 900 J of work to pull on the pulley as the pulley uses 300 J of work to lift a box?
300%
33%
600%
Answers: 3
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On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)
Answers: 1
What is the mechanical efficiency of a pulley that requires Time to use 900 J of work to pull on the...
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