Errata for Complex Systems AR

The following mistakes are in the first printing of Vol. 4•CS / Activities & Reader. If you have a 2nd printing or higher, they have been fixed. Please check the copyright page (page iv) to see which printing, or mixture of printings, you have.

Activity CS•3, p. 13, question A2(c)

  • The mass of oil (fluid X) should be "16" (grams), not "18".

Activity CS•11, p. 50, property #4 of idealized fluids (at the very bottom of the page)

  • The middle of the sentence should read: "... which means that both the pressure and speed are constant...".

Activity CS•11, p. 51, "Explanation of Activity"

  • The mass of 10cm3 of oil should be "8g", not "9g".

Activity CS•11, p. 51, figure for problem A3

  • The following figure should make it clearer to students what is going on here, i.e., the direction in which the glass tube is rotated so that it "rests on its side" in part (a). Right-click or command-click and choose "Open image in new window" (or equivalent) to see a full-sized version. Print that version at 100% for a transparency, or at 33% to replace the figure in students' books. (The answer sheet in the Complex Systems TG already has the corrected figure.)

Activity CS•12, p. 53, "Purpose and Expected Outcome"

  • The last sentence should begin: "When you find a system to which you cannot apply..." (Change shown in bold type.)

Activity CS•22, p. 106, question A2

  • Part (a) should read: "Which state(s) has the highest temperature? Explain."
  • Part (b) should read: "Which state(s) has the lowest temperature? Explain." (Changes shown in bold type.)

Activity CS•26, p. 127, description for part B

  • The springs being studied in this part of the activity are said to be "relaxed". This word should be omitted. Instead, the springs should be considered to have zero or very small relaxed length. The need for this change is that when the springs are relaxed initially, the balls attached to them in situation B1 would tend to move left and right as well as up and down, which is unnecessarily complicated. By making the relaxed length very small, the motion of the balls (in B1) becomes purely transverse, i.e., up and down. Note that this change affects only the results of B1.

Activity CS•30, p. 151, questions D3 and D4

  • The question in D3 should read: "Will the wave form on the lighter spring move faster or slower than the original wave form on the heavier spring?"
  • The question in D4 should begin: "Will the wave form on the lighter spring..." (Changes shown in bold type.)

Reader/Chapter 1: Fluids, p. R18, table showing speeds of water outside holes

  • The list of speeds in the last column are wrong. The correct table is shown below. (Right-click or command-click and choose "Open image in new window" or equivalent to see a full-sized version, then print at 50% to replace in student books.)

Reader/Chapter 1: Fluids, p. R19, table showing speeds of water outside holes and where the water lands

  • The list of speeds in the third column and the list of where the water lands in the last column are wrong. The correct table is shown below. (Right-click or command-click and choose "Open image in new window" or equivalent to see a full-sized version, then print at 50% to replace in student books.)

Many thanks to Prof. Josip Slisko of the Faculty of Physical and Mathematical Sciences at the Benemerita Public University in Puebla, Mexico, who found many of these mistakes.