Posted by admin on Aug 3, 2018 in Physics | 0 comments
Permanent Magnet: once magnetized, remains magnetized. Ferromagnet: easily magnetized (iron, nickel, cobalt, some rare-earth metals, magnetite). Paramagnet: magnetized with more difficulty. Diamagnet: repels magnetic fields (slightly) – “not magnetic”./Materials can be broken into smaller chunks, called “domains”. Each domain has a miniature magnetic field. Materials may look the same, but at a smaller level, domains could be different – hence why some are magnets (or magnetize easily) and Read More
Posted by admin on Jun 13, 2018 in Physics | 0 comments
Rational Choice Perspective
• What does it mean when a decision is rational?
• Someone weighs the costs and benefits of engaging in some
behavior and when the benefits outweigh the costs, we engage in
said behavior.• f(U) = individuals getting the most out of a situation with
the least effort.
Assumptions of Rational Choice Perspective
• An individual has precise information about exactly what
will occur under any choice made.
• An individual has the cognitive ability to weigh every
choice
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Posted by admin on Jun 11, 2018 in Physics | 0 comments
Journalism and media: Hot off the press
2b Read the article again and answer the following questions. 1.What does the writer find upsetting in written English these days? The technical skill is that of creating clear and succinct sentences, which any profession should inculcate. This can be taught and should be part of any core curriculum. Its absence from so much of written English nowadays, from users’ manuals to student exam questions to government white papers, is deplorable. 2.What does the
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Posted by admin on May 29, 2018 in Physics | 0 comments
1.What is the difference between a chemical and a physical transformation.
In a chemical transformation substances disappear and other new ones appear. These are called chemical reactions
In a physical transformation we have the same substances at the beginning and at the end of the process.
2.What is a chemical reaction?
The process by which some substances, called reactants, become new substances, called products.
3.How are chemical reactions represented?
With chemical equations
CH4(g)+2O2(g) CO2(
Posted by admin on May 25, 2018 in Physics | 0 comments
Risk
Managment definition
Risk management is about taking pracical steps to prtect people from
real harm and suffering. This must be approved by the boards of
directors of the company and outlined in a document. “Health and
Safety Management Plan”
Health
and Safety Managemet Plan
Defines how risks associated with work will be identified, analysed
and managed. This plan includes:
- Company identification information
- Company’s organization estructure
- Organisation of the production
- Company’s
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Posted by admin on Apr 13, 2018 in Physics | 0 comments
//Light is a particle: Energy of Light is contained in small packets. bundles of energy=photons. Explains why light can travel through space. explains “Photoelectric Effect”>Energy from the light shining on a metal plate gives electrons in the metal enough energy escape. Bright light has more energy than dim light, but dim blue light can dislodge electrons while bright red light cannot. Low fre. light (red/orange) cannot eject electrons. High freq. light (blue/viol.) can eject electrons. Read More
