Recent content by ilc

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    How does the change in area affect the velocity of helium gas in a vacuum?

    Hi: Hi there, it appears I forgot to mention the system is under vacuum... and the outlet pressure of 0.065 psi is that of the vacuum chamber here is a better diagram: http://imgur.com/64b7WLT We can assume vacuum extends upto the inlet Helium stream. This means density of Helium will...
  2. I

    How does the change in area affect the velocity of helium gas in a vacuum?

    Hello here is a schematic of the problem: http://imgur.com/CgcybVT A stream of helium gas will be used to carry aerosolized particles. I am assuming conservation of mass (and mass flow) The mission is to find the exit stream velocity of the gas. For the time being, i am assuming the weight...
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    Finding the force given the mass and radius.

    The attachment shows my approach to this problem, however, the answer is incorrect. can anyone explain to me how i should be thinking of this problem?