Fill in the blanks. Power station produce electricity at .​

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.

The heliocentric and the geocentric models of the solar system included these central principles

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.