TIPS ON SUBMITTING HW ASSIGNMENTS WITH WEBASSIGN The PHY121 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 ten opportunities to answer each numerical part of each problem. For Multiple 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 the button "Submit Answer" which appears at the bottom of that problem. If a part has been left blank, no submission is charged for that part. To avoid having to hit the submit button too often for problems that have many parts, you may often choose to fill in three or four numerical parts at a time before hitting SUBMIT. Beginning with the third incorrect submission for a single part, you will receive a 5% penalty for each incorrect submission 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). TYPING IN MORE THAN THREE SIGNIFICANT FIGURES IS A WASTE OF YOUR TIME. For the rare problem in which answers must be correct to a fraction of a percent, enter four significant figures; it is always a waste of your time to enter more than four sig figs. 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 ten submissions. Approximately 5 minutes after the due date for each assignment has passed, you will find a practice version of the assignment available. You may do this practice version as often as you like, but no credit will be given. The practice versions of the HW assignments are found by going to "Past Assignments", then opening each assignment. At the bottom of each randomized question, you will find a button that allows you to practice the question as often as you like. If the button doesn't appear immediately, just click on the answer box for that question. Automatic EXTENSIONS are available for each HW assignment; you will be able to make the online request for an extension after the due date for the assignment has passed, and the open window for submitting your online request will close 48 hours after the due date. Once you have been automatically granted the extension, your new due date will be 48 hours after the original due date. You will receive a 70% extension penalty on the point values for any parts completed after the original due date (all parts completed before the original due date will receive no extension penalty).