Evaluate and describe John F. Kennedy’s leadership between January 1961 and his assassination in November 1963. Include 2 positives and 2 negatives. Did Kennedy’s presidency escalate or ease Cold War tensions? Why?
Answers
Answer:
No nation states because Europeans never saw themselves as sharing a common identity or culture. E.g., The Habsburg Empire of Austria–Hungary comprised French, Italian and German-speaking people.
Europe was broadly divided into two classes during this period namely: Aristocracy
The land owning class.
Numerically small, but dominated Europe, both socially and politically.
Spoke French which was considered the language of the high society.
Families were connected through marriage.
Question :-
Write the properties and uses of diamond.
Answer :-
Properties
1. Brilliant and pure diamond is the hardest natural substance.
2. The density of diamond is 3.5 g/cm³.
3. The melting point of diamond is 3500°C.
4. When diamond is heated at 800°C in the presence of Oxygen CO² is given away. In this process no other product besides CO² is formed.
5. Diamond does not dissolve in any solvent.
6. Acids/bases have no effect on diamond.
7. Diamond is a bad conductor of electricity and it does not have free electrons.
Uses
1. Diamonds are used in glass cutting and rock drilling machines.
2. Diamonds are used in ornaments.
3. Diamond knives are used in the eye surgery.
4. Diamond dust is used for polishing other diamonds.
5. Diamond is used to make windows giving protection from radiation in space and artificial satellites.