Consider the exponential relaxation of a source-free RC or RL network from some non-zero initial condition. a. How many time constants does it take for the response, vC (t) or iL (t), to reach (i) 90%, (ii) 50%, and (iii) 10% of its initial value?

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

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Burgers vector is generally parallel to the dislocation line. a)-true b)-false