Recent content by James Ray

  1. James Ray

    When you heat a sheet, does it expand or compress?

    Theta is normal to the centreline, if you define the centreline to be the axis parallel to the two sheets. Does that help answer your problem?
  2. James Ray

    Pendulum pulse vertical flick period

    Homework Statement Homework Equations T= 2pi*sqrt(L/g) The Attempt at a Solution T= 2pi*sqrt(0.325/9.8)=1.14 s That seems like a reasonable answer. [/B]
  3. James Ray

    Pendulum on Earth and another planet different periods radii

    Now I get 11200 km.
  4. James Ray

    Pendulum on Earth and another planet different periods radii

    I forgot to square the radius in the first calculation.
  5. James Ray

    When you heat a sheet, does it expand or compress?

    What I don't fully understand is what the angular location of the first-order interference minimum is.
  6. James Ray

    When you heat a sheet, does it expand or compress?

    Your Your argument seems reasonable.
  7. James Ray

    Pendulum on Earth and another planet different periods radii

    The radius seems very small (a factor of 10 less than Earth's radius. But I can't see any mistake in the solution.
  8. James Ray

    Pendulum on Earth and another planet different periods radii

    Homework Statement Homework Equations The Attempt at a Solution
  9. James Ray

    Time taken for a mass on the end of a spring to hit a wall

    Thanks, I've changed the post.
  10. James Ray

    Time taken for a mass on the end of a spring to hit a wall

    Homework Statement Homework Equations The Attempt at a Solution [/B]
  11. James Ray

    Work done on ideal monatomic gas in adiabatic process

    1. The problem statement, all variables and given/known data Homework Equations [/B] The Attempt at a Solution [/B]
  12. James Ray

    Solve Ideal Gas Problem: Gamma = 1.4, VA=4.33m^3, PA

    Homework Statement A gas undergoes a cyclic process as shown in the figure above. The gas has gamma = 1.4. In the diagram A has volume V_A = 4.33 m^3, pressure P_A Homework Equations The Attempt at a Solution [/B]
  13. James Ray

    Two masses on each end of a spring lying horizontally

    Homework Statement Homework Equations T= 2*pi*sqrt(m/k) U=1/2*k*x^2 The Attempt at a Solution https://www.physicsforums.com/attachments/100892, [/B]