Atomic Arrangements of Permanent Magnets
Not what you're looking for?
1. Name the three kinds of strength used to characterize materials AND give an example of a material that are strong in each of these modes.
2. Explain how atoms can be arranged in such a way to create a permanent magnet.
3. Identify 10 objects in your home that use semiconductors. What other kinds of materials with special electrical properties are found in all of these 10 objects?
4. Research the status of magnetically levitated trains like the one now operating in China. How does it operate? How fast might it go?
5. How does a nuclear reactor work?
6. What types of researchers and scientists use carbon-14 radiometric dating? What type of researcher would use the other isotopes such as uranium-238?
7. Use the periodic table to identify the element, its atomic number, mass number and electrical charge of the following:
# Protons # Neutrons # Electrons Element Symbol Atomic Number Mass Electrical Charge
1 0 1
8 8 8
17 18 18
36 50 36
8. What are the half-lives of the following common isotopes:
a. Carbon-14:
b. Uranium-238:
c. Uranium-235:
Purchase this Solution
Solution Summary
We solve a variety of problems concerning radiactivity, electricity, magnetism, and nuclear power.
Solution Preview
1. The three types of strength used to characterize materials are tensile, compressive, and shear strength. Steel has a high tensile strength, concrete has a high compressive strength, and diamond has a high shear strength.
2. In a permanent magnet, the atoms are arranged with each of their magnetic moments lined up, i.e. the electrons in each atom are orbiting about the same axis.
3. Household objects that use semiconductors include computers, TVs, radios, microwave ovens, clocks, CD and DVD players, dishwashers, washers, and dryers. All these appliances also contain wiring with high electrical conductivity.
4. The Shanghai Maglev train [1] is the only ...
Purchase this Solution
Free BrainMass Quizzes
Intro to the Physics Waves
Some short-answer questions involving the basic vocabulary of string, sound, and water waves.
Introduction to Nanotechnology/Nanomaterials
This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.
Basic Physics
This quiz will test your knowledge about basic Physics.
Variables in Science Experiments
How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.
Classical Mechanics
This quiz is designed to test and improve your knowledge on Classical Mechanics.