In 1840, the United States had as many miles of track as it did

A. about one-tenth
B. less than half
C. twice
D. Intro

According to thomas hobbes concept of the social contract what do people exhange for protection by the government ?

Which of the following was the most important interest for a factory? design losses peoples moral hiring

One day as your professor is driving to work, another driver runs through a red light and hits his car. the professor is shaken up but survives the accident. however, the next time he starts to enter the intersection,he becomes nervous and fearful. soon,he starts going to work via another route to avoid the intersection even though this route adds twenty minutes to his commute in each direction. according to the principles of classical conditioning, why does the professor become scared of the previously harmless intersection? what can he do about this, as going via other route is very time consuming? be specific. break down the situation into its parts and show how the principles of learning apply.