The Computer-Assisted Personalized Assignment system (CAPA), developed at Michigan State University, is used in many of the introductory courses in the Department of Physics and Astronomy. It is being used to generate individualized assignments for the students. The system allows you to enter your answers directly via networked terminals and the World-Wide WEB and gives you immediate feedback (correct/incorrect). You are allowed to reenter solutions to the problems before the due date.
It is strongly recommended that you answer the questions before you login to the capa computer. Team studying and problem solving is a good way to learn and understand, and is strongly encouraged.
Each assignment sheet has your NAME and also a specific Personal Identification Number (PIN). Each set has a different PIN. The PIN number is printed on the top of your assignments (which are available on the GOPHER server and can be printed out in Taylor Hall).Your are now ready to start using CAPA.
================================================================== Computer-Assisted Personalized Assignments (CAPA) system -- phy121f6 Physics 121: Mechanics -- Enter STUDENT NUMBER and PIN, hit ENTER/RETURN after each Office Hours: Wolfs: T 11.00 am - 12.30 pm (B&L203D) De: Klebe: Williamson: STUDENT NUMBER: CAPA ID: To exit system, just hit ENTER/RETURN ==================================================================
================================================================== Student's Name Section: ??? MAIN MENU H=Help S=Summary T=Try set V=View previous set X=eXit system COMMAND: Enter a command from the list above and press ENTER/RETURN ==================================================================
Use S to get an up-to-date summary of your homework grades.
Use T to try to solve the current homework set.
Use V to view the answers to previous homework sets.
Use X to exit the system.
================================================================== 1.[1pt] Two lengths a and b are measured with a meter stick, each with a possible error of 0.3 cm. The values obtained are a = 21.4 cm and b = 27.8 cm. What is the maximum fractional error in the quantity (a + b) ? Command/Answer *Unanswered Commands :M = Main Menu :7 = go to Problem 7 RETURN = Enter/Execute :X = eXit RETURN = Next Problem ==================================================================
You can immediately enter your answer and CAPA will tell you whether your answer is correct or not. Note that you need to supply the correct number of significant figures. Most problems require 3 significant figures and answers with a different number of significant figures are in general not accepted ! Other options are:
The number of times you can try to reenter the solutions to the problems you missed is limited to a value set by your instructor. This value may vary from problem to problem. The system records the number of times you try each problem and the solution entered for each attempt.
================================================================== TERM SUMMARY 1 2 3 4 5 12345678901234567890123456789012345678901234567890 1: 1/ 41( 2%) YN---------------------- 112222222222222221211211 1 sets, total= 1/ 41 (2%) Enter a command from the list below and press ENTER/RETURN COMMAND: M = Go to main menu N = Next Page P =Prev Page ==================================================================
It shows that you have answered only question 1 and 2 from set # 1 and that your final answer for question 1 was correct. The total number of points for this assignment is 41 and the question that was answered correctly is worth 1 point. The average score so far is therefore 1 out of 41 (or 2%).
You can also use a WEB browser to enter your solutions to the homework assignments. The use of the WEB browser has the advantage that in most cases you will see the graphics on the screen, in exactly the same way as they appear on the printed versions of the assignments. In this section we will discuss the procedure to be used to enter your solutions via the WEB.
Note: you need to use capital and lower-case characters in exactly the way they are listed above. /CAPA/class.html is not the same as /capa/class.html ! It is probably best to define a bookmark that points to the CAPA login page.
NOTE: you can use both WEB access and telnet access to enter your solutions to the assignments. They both access the same data base.
For many problems, you will be required to enter the units as part of the answers. The tables below list the units that are recognized by CAPA. Note that you can combine units in this table in order to create the units appropriate for the problem you are working on. For example, if you are required to calculate the density of a solution, you can use as units kg/m^3 which is a combincation of two base units (kg and m). However, CAPA would also have accepted a solution in tehrms of g/cm^3 etc. etc.
|mole||mol||amount of substance|
|nautical_mile||n_mi||6080 ft||length, nautical mile (UK)|
|astroUnit||AU||1.49598E11 m||length, mean earth to sun distance|
|acre||acre||4840 yd^2||area, acre|
|mmHg||mmHg||1.33322E2 Pa||pressure, millimeter of mercury|
|atm||atm||760 torr||pressure, standard atmosphere|
|joule||J||N*m||energy, work, heat|
|watt||W||J/s||power, radiant flux|
|volt||V||J/C||electric potential, electromotive force|
|ohm||ohm||V/A||electric resistance, use this in /ANS|
|tesla||T||V s/m^2||magnetic flux density|
|radian||rad||m /m||plane angle|
|degree||deg||1.745329E-2 rad||plane angle (Pi rad=180 deg)|
|steradian||sr||m^2 /m^2||solid angle|
|gray||Gy||J/kg||absorbed dose (of radiation)|
|sievert||Sv||J/kg||dose equivalent (dose equivalent index)|