Homework in WebAssign

We had a family emergency situation yesterday, so I did not get the homework up in WebAssign. It is mostly multiple choice concept questions but one nice little brain burner problem featuring Spider-Man and a bit of trig.

That being the case, I have set a Spider-Man thread in Discussions on Webcourses.

Homework status

Everybody in class has now had one homework assignment graded by me. You ought to be grading your own homework on the weeks you do not turn it in, going by the solution PDFs.

Also, there is a new row on your My Grades page. It will start keeping the running subtotal of your HW scores for the rest of the semester.

Quiz 1 scores are UP.

All of the Quiz 1 scores are now up.

Students with green and yellow quizzes, be ready to pick up your paper at the start of lecture tomorrow.

P.S. I am still having trouble with uploading iClicker 2 data. I.e., "'PC LOAD LETTER"

Your reading and WebAssign homework is now available.

Your reading and WebAssign homework is now available. Bunch of problems across three chapters. Work carefully.

Podcast UP

Yesterday's podcast is now UP.

Look for the WebAssign HW a little later today.

Replacement podcast

The podcast of yesterday's lecture accidentally got discombobulated!

So I have fixed up a new version, same basic material, but different narration. Also it is in .mov video format, instead of my usual .m4a enhanced audio.

Go for it.

Solutions

I just posted a bunch of solutions:

1. HW 4 solution, with brain burner shown.
2. Quiz 1 solutions: versions A (white version), B (pink), C(yellow) and D(green). Each version was some variation of handling a half-parabola. Look in the Exam blurbs folder on the home page.
   

I wrote a few variations on the solution of each version. That being the case, it would probably be helpful for everyone to view all solutions, and you could learn something maybe.

Precise diagram of center of curvature, HW 4

To follow up a remark of Daymian J. in Discussions, about how to find r, I posted a diagram of the parabolic path and the centers of curvature, including the target point at time t = 4.00 sec.

So, go look at "Laws of motion" and the thread about finding r.

Quiz grades will be next week, probably.

With 60 homeworks and 270 quizzes to grade, and me only for the work crew, it will likely be next week when I post quiz grades.

Be patient. Be alert.

Tangency

Velocity is the definitive tangent vector, a definition that extends all the way into the curved spacetimes of the general theory of relativity. Nice.

Some blurbs on tangency at MathWorld.

Seating chart Tuesday

1. A-B on left side, in front of the lectern, first two rows.
2. C-D on right side, first three rows.

Trouble with some iClicking data.

There has been a persistent system error for iClicker 2 data uploads. Some of you have your data squared away, some do not. The trouble seems to be happening with people who have NIDs near the end of the alphabetic order. It is nothing you all have done; it is Webcourses. The Webcourses sys admins and I are trying to sort it out, no success so far.

But we WILL get it squared away as soon as we can, and then things will be a lot happier, gradebook-wise, kind of like taking a piece of raw pyroxene jadeite, a rock, and turning it into a beautiful piece of jade.

Sept. 11 assignment is ready.

Projectiles and circular paths galore are now ready for you in WebAssign, due on Tuesday, Sept. 11.

Attendant required reading is: Chapter 4, sections 3, 4 and 5.

Bonus point situation from iClicker 2

I just typed up a short blurb about how to earn bonus points in iClicker 2. Uusually it is in the syllabus, but this is good too, in Webcourses.

Go take a look. Those bonus points come in handy at the end of the semester!

Homework 3

You can grab the PDF of Homework 3 in the Webcourses home page. It is due on Thursday. Think about two separate equations of motion, one of them accelerated and the other not accelerated.

Ex. 46, p. 70

Yes, I like it a lot.

HW 1 and HW 2 points now in Webcourses

You can now view your HW 1 or HW 2 score, if you turned it in, by looking at the My Grades page in Webcourses.

I will be handing back the HW 1 and HW 2 papers tomorrow.

S.I. schedule

Jon Ousley's S.I. schedule is the following:

Tuesday

12:00 - 12:50 PM

ENGR286

Wednesday

1:30 PM - 2:20 PM

ENGR224

Thursday

1:30 - 2:20 PM

COMM114

Friday

11:00 - 11:50 AM

PSY111