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A40-kg boy is standing on the edge of a stationary 30-kg circular platform that is free to rotate. the boy tries to walk around the platform in a counterclockwise direction. as he does:

Answers

  • Réponse publiée par: JUMAIRAHtheOTAKU
    It is all about pressure. when you plug upon the nozzle, there is no way for the pressure of the fluid to rise above a certain value, so pushing in is opposed by the fluid pushing back on your finger, it gets hard! however, if you open the valve and allow fluid to squeeze out, then the pressure can be relieved a bit and that allows you to keep the piston moving down. that is applying an unbalanced force that allows the fluid to accelerate from zero velocity inside the barrel to some higher velocity through the nozzle.
    answer 2:
    this is about pressure - the air inside of the syringe takes up some volume and exerts pressure on the plunger. if you keep the air inside from escaping by holding the nozzle closed, then the air will get concentrated to higher pressure as you push in the plunger - until the pressure inside the syringe is the same as the pressure you're putting on it with the plunger, at which point you can't push it in anymore, because the air pressure becomes stronger than your finger.
  • Réponse publiée par: batopusong81
    Some go faster   like paper and wax paper  then some go  slower like the plastic cover.
  • Réponse publiée par: shannel99

    answer:I don't know

    Explanation:yes

  • Réponse publiée par: ShairaGailSanchez
    So ω = 2π / 3600 rad.s-1 = 1.7 × 10-3 rad.s-1. The hour hand takes 12 hours = 12 hours × 60 min/hour × 60 s/min = 43200 s to do 2π radians, so ω = 2π rad/43200 s = 1.5 × 10-4 rad.s-1.
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A40-kg boy is standing on the edge of a stationary 30-kg circular platform that is free to rotate. t...