Q1. Calculate the number of vacancies per cm3 expected in copper at 1080oC (just below the melting temperature). The activation energy for vacancy formation is 0.87 eV/mol.
Q2. As junior project manager for Avengis Construction, Johan Kruger had very tight deadlines to meet. He urgently needed the good construction site manager to replace Thabo Mnyandu. Since he was new to interviewing, Johan was somewhat apprehensive while the first candidate arrived. "Welcome, Ms Mandini. Have a seat. Let's get started right away." Shirley Mandini, an ethnic Zulu, felt somewhat uneasy with proceeding into the interview so suddenly. Johan was not sure what questions to ask. He was also acutely aware of an inspection team due to arrive soon. "So, tell me a little bit about yourself, Shirley," Johan enquired. Throughout the next thirty minutes Johan had difficulty directing the flow of the interview.