The PHY 124 Fall 2010 Lab 7 pretest is now posted for you to work on and submit before the beginning of your Lab 7 section next week. You will find it in the Assignments content area in Blackboard for your PHY 124 Lab section. As explained in the course syllabus, each Lab pretest is worth 35 points. As you will see, the Lab 7 pretest consists of 4 questions. The first is worth 8 points, and the last three are worth 9 points each, making the total possible score 35 points. To do the pretest you will need to study carefully the Lab 7 manual and to re-familiarize yourself with MapleTA syntax. Go to
http://www.ic.sunysb.edu/class/phy122ps/labs/dokuwiki/doku.php?id=phy124off:phy124_main_page
and read the instructions there on the "main page". Please also click on and review the
-- "Instructions" link (you've seen this before)
-- "Uncertainty, Error and Graphs" link
and, finally, the
-- "PHY 124 Lab 7 - Interference and Diffraction" link.
The "red" links are not yet active, on purpose, but as the course develops they will be made active.
As you already know, the lab pretests are prepared in the "Maple TA" software environment. You may work on each assignment as many times as you wish, but the link in the Assignments section of Blackboard for your PHY 124 section will become inactive at the starting time of your lab section. Therefore, you should not wait until just before your lab section to begin work on it. If you read the Lab Manual carefully and, there is no reason for you not to earn all 35 points for the pretest. Make sure you read carefully the instructions for each pretest problem. After each problem click on "Next" until finishing the last one, Question 4; then make sure you click on "Grade" in the Maple TA software environment. After you get your grade, you may click on "View Details" to see more about how you did. Finally, click on "Quit and Save".
Good luck!
Prof. Koch
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7 comments:
I cannot figure out how to read the micrometer. what is the upper panel? I only see one set of numbers. =(
-Vito
Hey Vito,
I found this useful:
http://www.linnbenton.edu/auto/day/mike/read.html
http://www.slideshare.net/meenng/micrometer-and-vernier-calipers-reading-with-instructions
this also helps!
Hey,
for question 2 part that s=_____________________,
I don't understand how to go from mlambda=bx/D to that form. help!
All: I agree that the two url's are both useful.
Vito: the "upper panel" refers to the upper picture in Fig. 2 in the Lab 5 writeup.
10:29 am anonymous: You have the equation mlambda = bx/D that you wrote down. The problem instructions say to put that equation in the form x = s times m. Just think of "s" as standing for "something". Put the equation in the form x = something times m. That's easy to do. The symbols that combine together to make the "something" is then the slope of an x vs. m graph. OK? Prof. KOch
professor,
the problem arises that it says chi=s*m. not x=s(m) so when I try to solve for "something" I don't know where that something is coming from.
help!
No, that's not a chi. It's an x (exx) in italic font. The font is irrelevant: you don't have to try to enter answers into MapleTA in italic font. The little equation should be read exx equals ess times emm. You seem to be making it harder than it needs to be. Just solve the mlambda=bx/D formula for x. Having done that, whatever multiplies the "m" is the "something" I was reffering to. I hope you now understand this.
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