How to install a curt 5th wheel hitch in a 2017 chevy silverado

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

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.

What is creep? what is stress relaxation?