Physics, 02.11.2020 16:30 casianogabriel2004
The balloon rocket is held in place by a force F. The nozzle has a cross section area of 0.02 space m squared and the air density is 1.2 space k g divided by m cubed, the exit velocity of the air at the nozzle is 10 space m divided by s, find out the value of the force F in unit of Newton.
Answers: 1
Physics, 22.06.2019 09:00
Sobre transformações cÃclicas, são feitas algumas afirmações, determine quais estão corretas. i – a variação de energia interna em uma transformação cÃclica é nula; ii – o trabalho, em uma transformação cÃclica, é sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cÃclica é, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocórica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
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Physics, 22.06.2019 19:30
Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.
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Physics, 23.06.2019 00:00
What energy transformations occur each time the skateboarder rolls up the ramp?
Answers: 2
The balloon rocket is held in place by a force F. The nozzle has a cross section area of 0.02 space...
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