Recent content by mattpd1

  1. M

    RC Circuit, what does it imply when resistance = capacitive reactance (R=Xc)?

    Homework Statement I am trying to complete a lab about RC circuits. I was told to make a graph of both the high-pass and the low-pass filter (frequency vs. Vin/Vout). Then I was asked this question: "Explain why the two lines on your graph should always cross at the frequency where XC =...
  2. M

    Laser Interference and Diffraction, single and double slit experiment?

    Homework Statement I did the single slit light diffraction lab. The diode laser we used was 630-680 nm. It produced an image very much like the one on this page: http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/fraungeo.html#c1 How does having multiple wavelengths in the laser change...
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    Why Does the Slope of Log T vs. Log m_eff Equal 0.5 in Oscillation Experiments?

    like this? log(T)=log(2\pi )+\frac{1}{2}log(\frac{m_{eff}}{k}) So, I end up with en equation for a line with a slope of 1/2? Which question does this answer though? I think this answers the question why the slope SHOULD equal 1/2, but what about the other part that asks why it MUST equal 1/2...
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    Why Does the Slope of Log T vs. Log m_eff Equal 0.5 in Oscillation Experiments?

    Homework Statement In the lab, we had a hanging spring. We proceeded to add mass to the spring (starting at 100g, and increasing by 50g until 500g) and timed the period of oscillation, T, for each mass added. We also found the spring constant by finding the slope of Displacement vs. Mass...
  5. M

    What Height Does the Package Rebound to After a Perfectly Elastic Collision?

    Oh crap. 2.6 is the speed of the objects after an inelastic collisions. I have been using the wrong number the whole time. Let me try it the right way... Is the velocity 7.67 m/s? GOT IT! 33cm is the rebound height. When I did finally get the correct FINAL velocity for the mass, it was...
  6. M

    Use work/energy throem to derive an expression for moment of inertia?

    So, 2h/t^2=a? vf=2h/t^2*t=2h/t? And when rewriting omega, should I use 2h/tr? I still can't get it exactly right. I guess my algebra skills are lacking, because I went about it a few different ways, getting a different answer each time. I start with...
  7. M

    Use work/energy throem to derive an expression for moment of inertia?

    Hmm... vf as a function of t and h? Is it just vf=h/t? Also, what about angular velocity? I assume it needs to be written in other terms as well. Does it equal v/r?
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    What Height Does the Package Rebound to After a Perfectly Elastic Collision?

    Homework Statement A package of mass m is released from rest at a warehouse loading dock and slides down a 3.0m high frictionless chute to a waiting truck. Unfortunately, the truck driver went on a break without having removed the previous package, of mass 2m, from the bottom of the chute...
  9. M

    Conservation of energy/momentum in a pendulum?

    Got it, thank you much.
  10. M

    Use work/energy throem to derive an expression for moment of inertia?

    Homework Statement Today I had a physics lab. It involved a hanging mass on a string that hung off the table. It went through a pulley and the string was then spooled around a rotating spool on the table. We first measure the radius of the spool. Then we figured out the mass it took to...
  11. M

    Conservation of energy/momentum in a pendulum?

    I think I may have answered the second part too. Vf(block)=.8 m/s Vf(bob)= -1.6 m/s Does this look right?
  12. M

    Conservation of energy/momentum in a pendulum?

    Homework Statement http://www.phy-astr.gsu.edu/Hsiao-Ling/quiz2211-F10.ppt" You have a pendulum: The bob's mass is 200g. The string length is 1m. The angle the bob is raised to is 45 degrees. You also have a block that is at rest at the bottom of the pendulum's swing: The block's...