Answer:
The Aztec pyramids were built to house altars.
Top: flat, to serve as a base for the placement of the altar
External aspect: stairs and sculptures embedded in the walls. Coating of unpolished stones
Access: By steps to reach the top of the pyramid, where were the altars
Base: Square or Rectangular
The Egyptian pyramids served as tombs for the pharaohs.
Top: Well defined summits
External aspect: smooth walls, no stairs or objects on the walls. Polished Granite Block Flooring
Access: through corridors and intermediate chambers to reach the interior of the building, where is the tomb
Base: square
Explanation:
Federal Emergency, Administration of public works, Franklin D. Roosevelt,president of the united states. Harold L. Ickes, Administrator of public works. Pine City Village Hall, 1939. I hope this is what you are looking for
The best and most correct answer among the choices provided by the question is the fourth choice which is all of the above.
The use of fossil fuels makes the US vulnerable because it is an exporter of the fuel, and also it imports its petroleum from foreign countries most especially the Middle East.
I hope my answer has come to your help. God bless and have a nice day ahead!
Answer:
a > 3 mm
so that critical flow is subject to detection
Explanation:
plane strain fracture toughness = 98.9 MPa root m
yield strength = 860 MPa
flaw detection apparatus = 3.0 mm
Y = 1
solution
we know critical stress formula that is
critical stress 
.............................1
here K is design stress plane strain fracture toughness and a is length of surface creak
so here length of surface creak will be
length of surface creak a = 
put here value
a = 
a = 0.0168 m = 16.8 mm = 0.66 in
so
a > 3 mm
so that critical flow is subject to detection
