The activation enthalpy for vacancy diffusion contains two contributions: the activation enthalpy for vacancy _____________and atom migration.
Fill in the blank(s) with the appropriate word(s).
formation
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Electric field lines symbolize
A. The force a positive charge would experience at the location of the line B. The path a positive charge would take if released at rest on one of the lines C. The distribution of electric charges in space D. Boundaries between regions of positive and negative charge
When a wool blanket is used to keep warm, what is the primary insulating material?
a. wool b. air c. the trim around the edge of the blanket d. a thin layer of aluminum foil (usually not apparent) inside the blanket
It is expected that only elliptical galaxies have a massive black hole at their center.
Answer the following statement true (T) or false (F)
What is the acceleration of a scooter that maintains a constant velocity of 15 m/s for 10 s?
A) 0 m/s2 B) 0.15 m/s2 C) 1.5 m/s2 D) 15 m/s2