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Europe

Back to Europe: 500 to 401 B.C.

Southern europe

Eastern mediterranean islands

In the last third of this century, all these islands were conquered by the men of Alexander the Great, but his control was short-lived. By 323 B.C. Rhodes was independent again and Cyprus belonged to Egypt until Demetrius Poliocertes, aspirant to the throne of Macedon, took Cyprus again. Then in 307 he besieged Rhodes, using 30,000 men to build siege towers and engines, but all of this failed. (Ref. 38 , 222 )

Greece

Throughout the peninsula there was endless conflict between the slaves and the ruined proletarian masses who demanded that the state support them. Up until about 378 B.C. the police force of Athens consisted of about 300 state-owned Scythian slaves. At the beginning of the century Sparta, having won the Peloponnesian War with the help of subsidies from Persia, dominated southern Greece; then, by forming an "Arcadian League", Thebes took over control from about 370 to 360 B.C.; then Athens, with growing special- ization of professional soldiers and generals, professional orators and financial experts be- came supreme for awhile. But in the last part of the century the unity which the Greeks could not find among themselves was forced on them by Philip of Macedon. The battle of Chaeronea (338 B.C.) was the end of Greek liberty and the beginning, in some sense, of Greek unity. (Ref. 28 , 8 )

In spite of the wars this was one of the great eras of culture. Plato lived until well into this century and the political problems always remained a central issue for him and he became a frustrated politician. The mainly hereditary tripartite class division of the "Republic" corresponded closely to the divisions of 6th century B.C. Greek society, with an aristocracy that guided the state, citizens who fought for the polis and slaves and foreigners who labored. Plato brought together diverse intellectual strands from different parts of the Greek world and he did so with a consummate artistry that few have even equaled, giving to subsequent Greek and European philosophy its central themes and problems, as well as much of its working vocabulary. It is not generally realized that Plato also wrote medical speculations, logical but without any direct experimentation and leading to many faulty conclusions about the human body, errors that persisted well into later centuries and were difficult to eradicate. (Ref. 47 , 125 )

Near the end of the century Aristotle, a pupil of Plato, returned from his travels with Alexander to found the Peripatetic School or Lyceum. Scientific material of all kinds had come to him through the Greek-Macedonian armies' conquests (Please see next section UPPER BALKANS) and his work became the basis of knowledge even 1,500 years later in the Middle Ages of Europe. Aristotle pioneered in biology, embryology and physiology and was a champion of inductive reasoning. Three great structural ideas appeared in this era which rule the mind of contemporary mankind today: ( l) Science, in the broad sense, including history and relation of man to the total environment; (2) the idea of one universal God of righteousness; and (3) the concept of world policy.

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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Source:  OpenStax, A comprehensive outline of world history. OpenStax CNX. Nov 30, 2009 Download for free at http://cnx.org/content/col10595/1.3
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