You can access the problems below via the Load Homework dialogue in the File menu of the Virtual Lab. They have been organized by concept and ranked by difficulty (A ranking of 1 denotes an easier problem; 5 is more challenging). Word files for these problems are provided so that you may edit and distribute the assignments in your classroom. The following types of problems can be found:Unknown Silver Chloride and Gravimetric Determination of Arsenic.
Quantum Field Theory
The first free comprehensive textbook on quantum (and classical) field theory. The approach is pragmatic, rather than traditional or artistic: It includes practical techniques, such as the 1/N expansion (color ordering) and spacecone (spinor helicity), and diverse topics, such as supersymmetry and general relativity, as well as introductions to supergravity and strings. The PDF version can be more convenient than paper books, with Web links and a clickable outline (contents) window.
Converting Units of Length
In this video Sal Khan discusses how to convert units of length. The problem in this eight-minute video is this:
Jamir is training for a race and is running laps around a field. If the distance around a field is 300 yards, how many corporate laps would he need to run at least 2 miles?
The Image Gallery: Rocks
This website offers an extensive, annotated list of photographs of rock types. Some of the photographs are of hand samples, others are of rocks in the field. Users can also follow links to image galleries of fossils, landforms, minerals, geologic features and processes, and geology and cultures.
The Great Magnet, the Earth
This site provides a non-mathematical introduction to the magnetism of the Earth, the Sun, the planets and their environments, following a historical thread. In 1600, four hundred years ago William Gilbert, later physician to Queen Elizabeth I of England, published his great study of magnetism, "De Magnete"--"On the Magnet". It gave the first rational explanation to the mysterious ability of the compass needle to point north-south: the Earth itself was magnetic. "De Magnete" opened the era of mo
Social work learning practice
This audio unit focuses on the importance of people's backgrounds and experiences in the field of social work. It identifies the diverse ways in which service users and social workers define themselves, helping you to understand how the two groups perceiv
The EJS Helmholtz Coils Model shows a the magnetic field between two circular coils of wire. The default configuration, known as a Helmholtz coil, sets the separation distance D equal to the coil radius R. These values produce a nearly uniform magnetic field B between the coils.
Unit 4 - Taking action for household food security (Module 3)
In this unit you will get the opportunity to apply your knowledge and skills when you work in groups using certain tools and methods, which are common in the field of food security.
NOAA: National Marine Sanctuaries
This webpage features information on the marine life and habitats of the marine sanctuaries in the United States. Photographs, videos, and information on conservation efforts, protection, management and heritage of the sanctuaries are included. Users can click on the marine conservation sanctuary of their choice to take a virtual journey. This webpage is sponsored by the National Oceanic and Atmospheric Administration (NOAA).
We have used visualization software to create 3-D virtual environments at six NeMO sites. Each virtual site is based on a real location at Axial Volcano, but the virtual views allow you to see the seafloor in a way that would otherwise not be possible. And you can visit any time! Each virtual site has a fly-through movie, a panorama, and links to video clips.
Choosing a Career in Health
There are two lessons in this group. The first lesson is a lab activity that illustrates the importance of hand washing as a way to prevent the spread disease. The second lesson includes discussion of various careers in the health field and allows students to explore careers utilizing various resources.
Topological Features of a Compressible Plasma Vortex Sheet: 6 Cases
The Voyager and Pioneer Spacecraft have detected large-scale quasi-periodic plasma fluctuations in the outer heliosphere beyond 20 AU. A plasma vortex sheet model can explain these fluctuations and the observed correlations between various physical variables. The large scale outer heliosphere is modeled by solving the 3-D compressible magneto-hydrodynamic equations involving three interacting shear layers. Computations were done on a Cray computer at the NASA Center for Computational Sciences. S
Bastille Day Flare Animation
Fly-in of TRACE full sun image to the flare location. Fade to a model of the field lines with a magnetogram of the solar surface. Pull back out to display a movie of flare images. This version uses lens flares to illustrate matter motion along the field lines.
Bastille Day Flare without Matter Motion
Fly-in of TRACE full sun image to the flare location. Fade to a model of the field lines with a magnetogram of the solar surface. Pull back out to display a movie of flare images. This version does not show the matter motion along the field lines.
When a large bundle of magnetic field lines breaks through the Suns surface, a sunspot can form. Sometimes, a smaller spot will emerge nearby, creating a magnetically complex region where particles are energized and then violently expelled. Supercomputer models show that rearranging magnetic field lines ...
Mapping Magnetic Influence
This lesson allows students to explore magnets and the region of influence around a magnet called a magnetic field. They will learn that magnets exert a force on a magnetically sensitive object without coming into direct contact. Students will create a map of the magnetic influence around the magnet.
Magnetic Globe Lithograph
This activity demonstrates what a dipole magnetic field looks like in 3D. It was developed because the commonly used classroom demo (iron filings on a sheet of paper on top of a bar magnet) leads to student misconception that magnetic fields are two-dimensional. The reverse side of the litho features ...
Scaling of CMOS devices into the nanometer regime leads to increased processing cost. In this regard, the field of Computational Electronics is becoming more and more important because device simulation offers unique possibility to test hypothetical devices which have not been fabricated yet and it ...
Nanoscale Antenna Apertures
This presentation will discuss light concentration and enhancement in nanometer-scale ridge aperture antennas. Resent research, including numerical simulations and near field optical measurements has demonstrated that nanoscale ridge antenna apertures can concentrate light into nanometer domain. More ...
Why is Nanotechnology Multidisciplinary? A perspective of one EE
The field of nano-science and nano-technology covers a broad area of expertise. Classical fields of Physics, Chemistry, Material Science, Electrical/Mechanical/Chemical Engineering all are involved in the "new" field f nano. Research and development in that area is by its very nature multi-disciplinary, ...