) Suppose that a pair of strategies, say s ∗ 1 , s∗ 2 , form a subgame perfect equilibrium of the infinitely repeated Prisoners’ Dilemma. Suppose, furthermore, that these strategies prescribe play at every stage t that is independent of past behavior. Show that s ∗ 1 , s ∗ 2 must be the same as the pair of strategies that play (C, c) in every stage, regardless of past behavior

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Plot schematically the tensile stress versus strain curves for a typical thermoplastic material at a temperature below its glass transition temperature (tg and at a temperature above its tg, respectively. do the same for a typical thermosetting material. list in a table any differences or similarities between the two materials at t> tg and t < tg, respectively, and relate them to the structures of the two types of polymers

Aload of 10kn is to be suddenly applied to the free end of a vertical rod of length 500 mm, the upper end being rigidly fixed. 190 mechanical science what should the diameter of the rod be if the maximum stress in the rod is not to exceed 100 mpa? the tensile modulus of the rod is 205 gpa.