Recent content by Meadow_Lark

  1. Meadow_Lark

    Henderson Hasselbalch Buffers and Volumes

    Homework Statement You have 725 mL of an 0.55 acetic acid solution. What volume (V) of 1.30 M NaOH solution must you add in order to prepare an acetate buffer of pH = 4.99? ( The pKa of acetic acid is 4.76.) [/B] Homework Equations pH = pKa + log A/HA Ratio of A- to HA = 10^(pH-pKA)[/B]The...
  2. Meadow_Lark

    When Does a Disc Reach Its Average Angular Velocity During Each Revolution?

    2pi
  3. Meadow_Lark

    When Does a Disc Reach Its Average Angular Velocity During Each Revolution?

    360 degrees
  4. Meadow_Lark

    When Does a Disc Reach Its Average Angular Velocity During Each Revolution?

    I'm pretty sure this is wrong, but... a formula for the time of average angular velocity tωavg = Φ/2
  5. Meadow_Lark

    When Does a Disc Reach Its Average Angular Velocity During Each Revolution?

    Are you asking me in general or specifically to this question? (in general; 2πr = 1 revolution)
  6. Meadow_Lark

    When Does a Disc Reach Its Average Angular Velocity During Each Revolution?

    Average angular velocity = ΔΦ/Δt...still doesn't help.
  7. Meadow_Lark

    When Does a Disc Reach Its Average Angular Velocity During Each Revolution?

    I am so confused by this question. I do not have a clue what I am supposed to do here. Can you please help?? [1pt] For each ith revolution, at what time point does the disc reach its average angular velocity? For example, for the 10th revolution what is the total elapsed time from the...
  8. Meadow_Lark

    Undergrad Spring Constant and Spring Series

    I have a question about the spring constant of springs in series. Basically why is it less than the springs involved in the series? I know that when in series the spring constant is the sum of the inverse of each spring involved, but why? thanks.