The counterweight is a captured asteroid with a 1km radius and a mass of 8.37758 x 1012 kg. The design altitude is taken to be h = 36,063.9 km. What factor would the current yield stress of carbon nanotubes have to be multiplied by to achieve such a configuration?

Precipitation hardening can be achieved in many light alloys by a three-step heat treatment. what is carried out and what is the purpose at each step? why is such a treatment necessary based on the nucleation and growth theory of phase transformation. compare this treatment with tempering martensite for carbon steels (similarities and differences).