PLTW Assessment Link
May 14th, 2012AP Objectives
March 8th, 2012Kirchhoff Problems
February 24th, 2012Remember: Your variables may be different than mine depending on how the picture was labeled, but answers should be the same.
Page #3: I1= 1.94 A, I2= 1.38 A, I3= .56 A, I4= .19, I5= .375 A
Page #4: I1= 3.14 A, I2= 1.43 A, I3= 1.71 A, I4= 1.29 A, I5= .43 A
I reduced the the two 6 ohm parallel resistors because it eliminates the need for extra equations. And, since the resistors are the same, the current in the 3 ohm resistor in the top parallel path need only to be divided by two in order to have the currents for that portion of the circuit. Make sure you have found the voltage drop in each resistor. Also, find the potential difference in the following segments. gh, fh, ce, ab
page #5: If I1 is pointed toward the 2 ohm resistor, the junction rule is then applied at the junction going to the 3 ohm and 6 ohm resistor. Form a loop from the +18v terminal around the outside of the circuit and a loop through the 2, 3, and 4 ohm resistor. I1= 2.25 A, I2=.75 A, and I3= 1.5 A. Make sure to find the potential difference in the parallel resistors.
Page#6: I1= 3A, I2= 2A, and I3= 1A. Find the voltage drop at each resistor. Find the power supplied by the battery and the power at each resistor.
Page 7: There is an ammeter in the circuit. It tells you that there is a current of 2A passing through the 5 ohm resistor. This implies that I1+I2=2 (junction rule.) Apply a loop rule from each battery from the positive terminal and going through the 5 ohm resistor. Once you write the equations, you can directly solve for I1 and then substitute to determine the rest of the variables. Find the values for I1, I2, and emf.
Page 8: Hints: 3 equations (one junction rule, two loop rules)
Find the currents, the voltage through each resistor.
Keep your Quest assignments up to date.
Bridge Design Challenge
February 13th, 2012Bridge Contest Link
http://bridgecontest.usma.edu/
Download the software for free!
http://bridgecontest.usma.edu/download.htm
Ohm’s Law and Power Equations
February 12th, 2012Use this reference for the Quest Assignment.
AP Physics C
February 12th, 2012Ask for enrollment for HCAPPHYC, 212005.
Density Chart
February 3rd, 2012http://www.simetric.co.uk/si_materials.htm
Physics stuff
January 17th, 2012Quest Essentials
January 11th, 2012In order to use Quest, please follow the process outlined in class and the Quest help packets that were distributed in class.
1. Your unique id number and password must be used. Keep it in a safe place. It will be used in other STEM/PLTW classes.
2. Make sure your computer is running the latest version of the web browser. (example: IE8 or better, Firefox, Safari etc)
3. Update to the newest version of ADOBE READER. Try this one, it is working for most: http://get.adobe.com/reader/
4. Read the instructions. Utilize your text, notes, online resources etc. The HELP tab on the Quest site will assist in answering general questions concerning the quest system.
5. Remember, our PLTW labs are open many times during the week, morning and afternoon, to assist. This includes computer use, printing, tutoring in math, science, and engineering projects. I offer tutoring just about every day, morning and afternoon!
6. Many have figured out that printing their unique Quest assignment is best for them, especially if limited web access is a concern. Keep in mind that solutions must be entered into the system before the expiration date and time.
7. Most Quest assignments will have solutions posted at certain intervals so that you may review for exams, determine misconceptions, and/or prepare for class.