Read the article on pages 1 1 What does the neurotransmitter acetylcholine do?
2 How do antagonist substances affect acetylcholine?
3 How do agonist drugs affect a person?
4 What does dopamine affect?
5 How might a person with too much dopamine be affected?
6 Low levels of serotonin cause
7 The medicine Prozac helps depression by
8 Why do people feel or act differently after using caffeine, cocaine or alcohol? What is being affected?
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Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.