The PHY111 WebAssign problems are designed to be
  done in STUDY GROUPS of 2-3 serious students.

    You will receive 10% bonus points for each question
  that you complete more than 48 hours before the
  assignment deadline.

    Please, never use your browser's BACK button in the
  middle of an WebAssign session.  The system is
  designed to only move in the forward direction.

    The way things are set up at this time, you will have
  four opportunities to answer each numerical part of each
  problem.  For Mutiple Choice parts, you only get ONE try.
  To have your answer graded for a single part of a problem,
  fill in only that part and select

          "Submit New Answers to Question ____".

  For numerical parts, you may simply fill in that part and
  hit the ENTER key.  If a part has been left blank, no
  submission is charged for that part.  Always use three
  significant figures in your numerical answers (unless the
  program gives other instructions for a particular problem).
  Numerical answers must be correct to within 2% (with rare
  exceptions which are noted within the problems).  To enter
  a number in scientific notation, use the format *.**E**;
  for example 5.97 X 10^24 would be entered as 5.97E24.

  NOTE:  There are some questions for which you have to
  "select all true statements."  These are called "Multiple-
  Select" questions; on these questions, you get the usual
  four submissions.