Select the correct answer. Adam wants to work in the field of forensic science and follow the rules for handling evidence. Which organization can he join to fulfill this
aspiration?
• B. National Academy of Sciences
© C. National Academy of Forensic Science
© D. National Science Academy
• A. International Academy of Forensic Science

C and A

Explanation:

the other 2 have no relation to forensics

(a) Surface energy is greater than grain boundary energy due to the fact that the bonds of the atoms on the surface are lower than those of the atoms at the grain boundary. The energy is also directly proportional to the number of bonds created.

(b) The energy of a high-angle grain boundary is higher than that of a small-angle grain boundary because the high-angle grain boundary has a higher misalignment and smaller number of bonds than a small-angle grain boundary.

Explanation:

(a) Surface energy is greater than grain boundary energy due to the fact that the bonds of the atoms on the surface are lower than those of the atoms at the grain boundary. The energy is also directly proportional to the number of bonds created.

(b) The energy of a high-angle grain boundary is higher than that of a small-angle grain boundary because the high-angle grain boundary has a higher misalignment and smaller number of bonds than a small-angle grain boundary.