http://www.merlot.org:80/merlot/ A search of MERLOT materials Copyright 1997-2013 MERLOT. All rights reserved. Fri, 24 May 2013 05:40:51 PDT Fri, 24 May 2013 05:40:51 PDT http://www.merlot.org:80/merlot/images/merlot.gif http://www.merlot.org:80/merlot/ 44 34 http://www.merlot.org/merlot/viewMaterial.htm?id=77291 Challenges for Electronics is a suite of seven educational programs for electricity, electronics and math. The titles of the seven programs are Basic Circuits Challenge, DC Circuits Challenge, AC Circuits Challenge, Trigonometry Challenge, Digital Challenge, Solid State Challenge and Power Supply Challenge. Each program contains several interactive activities. Activities for both circuit analysis and troubleshooting are included. The programs grade and correct all student work immediately. Student scores can be stored on diskettes or printed. The material is suitable for use as a supplement to classroom or tutorial instruction. The programs can also be used as a refresher course for employees who have already had basic electrical or electronics training. The programs run for ten executions of any time length. After ten executions, the programs become limited capability demos. http://www.merlot.org/merlot/viewMaterial.htm?id=83584 Fourteen Flash games to help students learn some basic electronics knowledge and skills, such as resistor color codes, engineering prefixes, binary-hex conversions, electrical units and abbreviations, Greek alphabet, capacitor codes, schematic symbols, multimeter operation, and oscilloscope operation. http://www.merlot.org/merlot/viewMaterial.htm?id=89242 Web assignment is based on a Shockwave simulation by The Article 19 Group. User is asked basic questions about energy usage in their home. http://www.merlot.org/merlot/viewMaterial.htm?id=89630 Web assignment based on an applet by Wolfgang Christian. Focuses on Coulomb's law for a point charge. List of helpful resources included. http://www.merlot.org/merlot/viewMaterial.htm?id=89628 Web assignment based on an applet by Wolfgang Christian. Focuses on the electric field flux and Gauss' law and aimed more at the engineering student, although it can be used for algebra-based physics with a little help from the instructor. List of helpful resources included. http://www.merlot.org/merlot/viewMaterial.htm?id=89616 Web assignment on electric potential using an applet by Wolfgang Christian. User practices understanding the relationship between an electric field and electric potential. List of helpful resources also included. http://www.merlot.org/merlot/viewMaterial.htm?id=89618 Web assignment on electric potential using an applet by Wolfgang Christian. User practices understanding the relationship between the electric potential and the resulting motion of a charged object placed in the potential gradient. List of helpful resources also included. http://www.merlot.org/merlot/viewMaterial.htm?id=89614 Assignment on the electric potential using an embedded applet by Wolfgang Christian. List of helpful resources included. http://www.merlot.org/merlot/viewMaterial.htm?id=672886 ״es1_XL is a one dimensional simulation of the interaction between two (infinitely long) electron beams moving in opposite directions. The observed behavior is commonly known as the two-stream instability. es1 was created long ago (~1970) by A. Bruce Langdon and is fully documented in the book Plasma Physics by C. K. Birdsall and A. Bruce Langdon, McGraw-Hill, 1985. This is an iPAD version of es1 for iPhone/TouchPad. It utilizes the greater screen area and pop-up menu features of the iPAD. The horizontal view, in particular, provides more simultaneous information to the user than is possible in the iPhone/TouchPad implementation.The opening view is a phase space plot of velocity versus position. The two beams will gradually evolve into a rotating donut shape which is characteristic of the instability. The energy versus time plot shows the evolution of the field energy. Initially it grows exponentially; it turns over and levels out once the system becomes non-linear, just as the donut forms.The window "Model" displays certain parameters for the two species. These can be changed, but take care as minimal checking is done. The parameters are defined as follows:N: number of particles, an integer. Maximum value is 4096. WP: omega, the plasma frequency QM: the charged q/m ratioV0: stream velocityVT2:sigma for Gaussian distributionNLG: no. of sub groups with same velocity distributionThere are two non-specie parameters:NG: number of grid points -- power of two -- 512 maximumDT: time stepL: length of systemNMODE: no. of field modes plottedModels:1. The two stream instability. The parameters are initially set for e- e- interaction. 2. Set QM1 to +1 for e+ e- interaction.3. Weak-beam instability. Set wp 1 = 0.0316 (1000 to 1 mass ratio) and V02 = 0.04. As in model 1, but set VT2 = 0.5 for both species….warm two stream5. As in model 4, but set NLG=32, N=4096 (both species), and L=10pi. NMODE=5Touch gestures:Both gestures only affect the x versus v plot. A one finger gesture moves vmin up or down; vmax is not changed. A two finger gesture (pinch) will zoom in the y ( here, v) direction.״This is a free app http://www.merlot.org/merlot/viewMaterial.htm?id=359968 A pdf of a solved problem in electromagnetic induction. The problem is completely solved which students can study and practice. Then, there is a test template that the Instructor can use for a quiz or test.