Why do jet engines have to be made of alloys?

2. What caused the two Comet crashes of 1954?

3. What advantages do turbine engines have over reciprocating engines?

4. What is distinctive about the Boeing 747 that makes it easy to spot?

5. What factors ended the Concorde program?

6. What changes did the jet era bring to airports?

7. What one big advantage do jet planes offer passengers?

8. What are some design features aircraft of the future may include?

9. How long would it take to fly from New York to London in a hypersonic aircraft?

How would widespread supersonic air travel change the world?

What would be some good consequences, and what would be some bad ones?

I only know know1

Jet engines r made of alloys because its super light

Explanation:

Citizenship in the Early Republic

After the collapse of the old monarchy and the foundation of the Republic, the control of Roman government was restricted to a handful of great families - the patricians, a word derived from patres or 'fathers'. The remaining residents/citizens were called plebians, representing the poor as well as many of the city’s wealthy. Soon, however, these plebians or plebs began to resent their second-class status and rose up, demanding to participate in the affairs of state and exercise their rights as full citizens of Rome. After the threat of a work stoppage became a reality, the resulting compromise - the “Conflict of Orders” - brought into creation the Concilium Plebis or Council of the Plebs. This representative body spoke for the plebians through a number of elected tribunes. It enacted laws that pertained initially to the plebians but eventually became binding to all citizens, including the patricians.