4. write assignment statements that perform the following operation with the variables a, b, and c:

(a) adds 2 to a and stores the result in b.
(b) multiplies b by 4 and stores the result in a.
(c) divides a by 3.14 and stores the result in b.
(d) subtracts 8 from b and stores the result in a.
(e) stores the value 27 in a.
(f) stores the character ‘k’ in c.
(g) store the ascii code for ‘b’ in c.

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

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?