the gravitational force of a star on orbiting planet 1 is f1. planet 2, which is twice as massive as planet 1 and orbits at twice the distance from the star, experiences gravitational force f2.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole

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.