Wright State University Lake Campus/2017-1/Phy1120/log


 * attend

Monday 9 January 2017

 * I need to fix error in schedule. We decided to have exams on Monday, and also to meet in one long segment MW starting at 10 AM.


 * Assignment:
 * 1) Click here to go up one level and click the three integers ### to get into your private miraheze account. You will be refused until you log in with your wsul### username and your password.  Log in and click main page.'
 * 2) Add your user name to Wright State University Lake Campus/2017-1/Phy1060. Do this by replacing _username by your username. )
 * 3) Open your private wiki account wsul### and click edit. You will see instructions enclosed in the "hide" tags:
 * 4) replace xxx by your Wikiversity username. This creates a link back to your Wikiversity page
 * 5) Fill in PHY1120 as instructed when y
 * 6) Create a word document called Enrollment and put it in your dropbox. For now, it should contain only your wsul### (046-056).  Also place your noun### password so you won't forget it.
 * 7) Paste this into your Wikiversity user account

16:10, 23 January 2017 (UTC)

 * Got up to How things work college course/Waves (Physics Classroom)
 * Project idea at this site. WARNING: Dropbox checks for plagiarism. BTW,  this is why we can reduce the cost of higher education by organizing all these individual efforts into a common platform using private wikis.
 * don't forget that [[w:Wikimedia Commons] supports movies]

https://www.khanacademy.org/science/physics/light-waves/interference-of-light-waves/v/constructive-and-destructive-interference

w/o crind

 * $$P.E. = q\Delta V$$, where E electric field is and &Delta;V is voltage
 * $$\Delta V = Ed\cos\theta = Ed$$ if d and E are parallel. Here d is displacement.

The above formula fails if E is not constant, but over a small distance it does work. Replace &Delta; by d and use calculus. For a distance, r, from a point charge or a spherically charged sphere:


 * $$|dV/dr| = |E|$$ (I used absolute value signs...don't worry about minus signs because they are too complicated to keep track of)


 * You might choose to not learn Special:Permalink/1378605 because it is not likely to be on an MCAT. (It teaches vector algebra)


 * Project ideas:
 * 1) Neatly solve problems that were not well solved in the answer key
 * 2) Pose and solve problems in the book that look appropriate
 * 3) Explain something for students. (???)

20 February 2017 (UTC) Is the osmotic force a "pseudo-force"?
The answer is yes and no. Wikipedia does not include osmotic forces in its article on pseudoforces. But search the word pseud in this excerpt] from the Google books search engine. The quote to the right is a good explanation.