Recent content by The Buttered Cat

  1. The Buttered Cat

    I Can different forces cancel themselves?

    Making it even simpler, if you had an object with just one force acting on it, you can apply an equal and opposite force to cancel that force, correct?
  2. The Buttered Cat

    Exit velocity of a gas through a hole

    I think the Bernoulli equation would work for an incompressible fluid but here you have a gas, so probably not applicable. This has come up before on this forum and here is a link that was referred to: http://www.mcnallyinstitute.com/13-html/13-12.htm Hopefully that will help.
  3. The Buttered Cat

    Solve for Req with T to Delta Transform

    Why is the 180 in parallel with the 10?
  4. The Buttered Cat

    Point between two wires at which the flux density is zero

    Be careful with your units there, but otherwise you are exactly right.
  5. The Buttered Cat

    Is This the Right Approach to Solving Kinematics Problem A?

    Looks like you're on the right track. Google trigonometric identities to figure out how to solve the quadratic. You'll get two angles as a solution.
  6. The Buttered Cat

    Point between two wires at which the flux density is zero

    The way you have it written it looks like you expect the point to be equidistant from both wires. Does that make sense to you, knowing the wires have different currents?
  7. The Buttered Cat

    An oscillating mass within an orbiting spacecraft question

    Start by asking what laws of physics is the bead obeying. Usually F=ma is a good place to start, and you know there is no angular acceleration since it is stuck on the wire. Can you write Newtons second law for the bead?
  8. The Buttered Cat

    Justification for 0 net E field within a charged shell

    Hi, How about this question- I can just take a point charge, draw a Gaussian surface somewhere in space that does not enclose the charge, and the total flux through that shell is also zero, but you wouldn't say that the field due to that point charge is zero. What is the difference?
  9. The Buttered Cat

    Places to learn kinematics in one and two dimensions W/Calc

    Did you try Wikibooks? They even have some examples to try.
  10. The Buttered Cat

    Engineering Possible to simplify or transform source in circuit

    Its been a long time since I've taken these classes but I'll take a look- I'm looking at your diagram. Where are i2, i3, and i4?
  11. The Buttered Cat

    Antenna gain reciprocity violation of conservation of energy?

    Can you point me to one of these online calculators you're using to come up with attenuation?
  12. The Buttered Cat

    Antenna gain reciprocity violation of conservation of energy?

    Antenna reciprocity is not an assumption, and you can't violate that under normal circumstances (meaning the antenna behaves linearly). I don't know much else about your problem, but that is certainly true.
  13. The Buttered Cat

    Can a Cat and Toast Really Create Perpetual Motion? The Science Behind the Joke

    It's a reference to the joke about creating perpetual motion using a cat with a piece of buttered toast strapped to its back. I'm pretty sure most people on this website have heard and told that joke multiple times.
  14. The Buttered Cat

    Can a Cat and Toast Really Create Perpetual Motion? The Science Behind the Joke

    Hi; I live in the US and have a PhD. in Electrical Engineering. My area of work is plasma physics. I have also taught introductory physics classes for 10+ years.
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