Physics, 22.04.2020 16:00 alexandraschwartz21
Uma prancha homogênea de 10 m de comprimento e peso 600 N está apoiada por dois rolos conforme a figura. O menino se desloca lentamente de tal forma que o atrito do rolo, com a prancha e o solo, seja capaz de impedir o deslocamento horizontal da prancha. A que distância máxima x da extremidade direita da prancha deve ser posicionado o rolo B para que o menino de peso 400 N, partindo de A, possa caminhar até a extremidade direita sem a mesma girar?
Answers: 3
Physics, 22.06.2019 09:00, bendmads04
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 1
Physics, 22.06.2019 16:50, justkevin1231
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
Uma prancha homogênea de 10 m de comprimento e peso 600 N está apoiada por dois rolos conforme a fig...
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