Collars A and B slide along the fixed right-angle rods and are connected by a cord of length L = 6.8 m. Determine the acceleration of collar B when y = 2.7 m if collar A is given a constant upward velocity vA = 2.13 m/s. The acceleration of B is positive if to the right, negative if to the left.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Agas is compressed from vi 0.3 m, p 1 bar to of v2 0.1 m3, p2--3 bar. pressure and volume are related linearly during the process. for the gas, find the work, in kj.

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