What is the main idea of "the distance to the moon" by italo calvino?

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

In a good thermo flask the main cause of heat loss is

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.