A quantity that gives the direction of a thermodynamic process is
a. entropy.
b. efficiency.
c. specific heat.
d. energy.
Question 2
A nuclear reactor is said to be critical when the average number of neutrons from each fission event that cause(s) another fission event is
a. <1.
b. 1.
c. >1.
d. any of the above.
e. only (b) or (c) above.