Ma'at,
(noun)
The Egyptian universe.
Examples of Ma'at, in the following topics:
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Ancient Egyptian Religion
- The Egyptian universe centered on Ma'at, which has several meanings in English, including truth, justice and order.
- Ma'at was renewed by periodic events, such as the annual Nile flood, which echoed the original creation.
- They believed humans possessed ka, or life-force, which left the body at death.
- However, the ba returned to the body at night, so the body must be preserved.
- By the New Kingdom, the soul had to face dangers in the Duat before having a final judgment, called the Weighing of the Heart, where the gods compared the actions of the deceased while alive to Ma'at, to see if they were worthy.
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Ancient Egyptian Monuments
- It is the largest and oldest monolith statue in the world, at 241 feet long, 63 feet wide, and 66.34 feet tall.
- The temple was the house dedicated to a particular god, and Egyptians would perform rituals there, give offerings, re-enact myths and keep order in the universe (ma'at).
- At the front of each court was a pylon (broad, flat towers) that held flagpoles.
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Humans and Electric Hazards
- Electric power causes undesired heating effects whenever electric energy is converted to thermal energy at a rate faster than it can be safely dissipated.
- Thermal energy delivered at this rate will very quickly raise the temperature of surrounding materials, melting or perhaps igniting them.
- A person can feel at least 1 mA (rms) of AC current at 60 Hz and at least 5 mA of DC current.
- The current may, if it is high enough, cause tissue damage or fibrillation, which leads to cardiac arrest. 60 mA of AC (rms, 60 Hz) or 300-500 mA of DC can cause fibrillation.The potential severity of the shock depends on paths through the body that the currents take.
- Usually the best way to help the victim is to give the fist a hard blow with an insulator or to throw an insulator at the fist.
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Two-Component Forces
- If no net force is applied to the object along the x-axis, it will continue to move along the x-axis at a constant velocity, with no acceleration .
- If the object is spinning, it will continue to spin at the same constant angular velocity.
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References
- A Nation at Risk.
- Cambridge, MA: Harvard University Press.
- Cambridge: MA: Cambridge University Press.
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References
- Available at: http://www.edpsycinteractive.org/topics/behavior/behovr.html
- Needham Heights, MA: Allyn & Bacon.
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Rotational Inertia
- To develop the precise relationship among force, mass, radius, and angular acceleration, consider what happens if we exert a force F on a point mass m that is at a distance r from a pivot point.
- We can rearrange this equation such that F=ma and then look for ways to relate this expression to expressions for rotational quantities.
- We note that a=rα, and we substitute this expression into F=ma, yielding:
- This equation is the rotational analog of Newton's second law (F=ma), where torque is analogous to force, angular acceleration is analogous to translational acceleration, and mr2 is analogous to mass (or inertia).
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References
- ., Cambridge, MA.
- Available online at http://wangtaoandlixia.blog.163.com/blog/static/4256638200831122124829/
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Equilibrium Constant Expression
- The equilibrium constant is an expression that gives the ratio of reactants and products at equilibrium.
- The law of chemical equilibrium states that, at any given temperature a chemical system reaches a state in which a particular ratio of reactant and product activities has a constant value.
- At time = 0, the rate of the forward reaction is high and the rate of the reverse reaction is low.
- As the reaction proceeds, the rate of the forward reaction decreases and the rate of the reverse reaction increases, until both occur at the same rate, reaching equilibrium.
- The equilibrium constant,denoted by K, is the ratio of products to reactants at equilibrium.
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Citizenship Rights
- Nationalization is the acquisition of citizenship by somebody who was not a citizen of that country at the time of birth.
- New citizens are welcomed during a naturalization ceremony in Salem, MA.