The distance from a lens to the focal point is called the
a.........................................................................................................................focus.
b...............................................................................................................focal length.
c.................................................................................................... point of intersection.
d..................................................................................................point of displacement.
b
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A runner ran 3,000 meters in exactly 8 minutes. What was his average speed in meters per second?
a. 3.75 m/s b. 6.25 m/s c. 16.0 m/s d. 37.5 m/s
The United States is undergoing some significant population changes. As of the year 2015, minority students in the nation are projected to make up what percentage of the school-age population?
a. 49 percent b. 13 percent c. 25 percent d. 43 percent
Understanding the nature of leadership has proved to be quite the challenge for practitioners and researchers because ______.
A. its appeal is limited to academics and scholars B. very little research has been done C. it has not received much attention D. it is a highly valued phenomenon that is very complex
______________ is critical, for without it all learning would be "situationally specific" .
a. positive feedback b. negative feedback c. reinforcement d. transfer e. none of the above