Concept Questions?

Some questions that need help concept. I have a set of 2 pages, but I understand that most of them (well, I think so). Consider a game of tug of war. According to Newton's third law, each team draws with equal force to each of the other team. So what determines who will win? A boat upstream in a river does not move in relation to the coast. The ship did no work? If you stop the engine and drift downstream boat, is any work done on the boat? "What the work done on a particle depends on the frame of reference? Does this affect the energy work first? Why do tightrope walkers carry a narrow beam of time? A wheel spins freely around a vertical axis with constant angular velocity. Small pieces of the wheel and fly out away. How does this affect the speed of wheel rotation? If you get a ring and a CD to go downhill, to get to the bottom faster? Explain. The voice of a person who has inhaled helium is very acute. Why?

1. The team with the greater force of friction with the ground is going to win. 2. No work is done when the engine running, but the work is done on the boat when the engine is off. Work = change in X * F 3. wtf? 4. I forgot. 5. I'm not sure this, but I'm pretty sure that this does not affect speed. As the speed of a vertical circle = sqrt (gr), and the equation does not work take into account the mass, there would be no doubt that mass is changing. 6. Well, the hula hoop, of course, because the CD is reduced by half by side. Duh. . It has to do with the inertia of rotation .. I forgot. 7. Helium is very light and … Oh, shit. I also forgot.

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