Due to the Curvature of the Earth, the Maximum Distance $D = \sqrt { 2 r h + h ^ { 2 } }$

question 31

Short Answer

Due to the curvature of the earth, the maximum distance D that you can see from the top of a tall building of height h is estimated by the formula $D = \sqrt { 2 r h + h ^ { 2 } }$ where r = 3960 mi is the radius of the earth and D and h are also measured in miles. How far can you see from the observation deck of a tower, 955 ft above the ground? Round the answer to one decimal place.

Recognize the potential therapeutic uses and hazards of psychoactive drug use.

Analyze the social and psychological factors contributing to substance abuse and dependency.

Understand the basic principles and effects of psychoactive drugs on neurotransmitter systems.

Understand the five levels of awareness and provide examples of each.

---

Definitions:

Muscle Fiber

A single muscle cell that contracts in response to stimulation and is capable of producing force.

Electrically Excitable Cells

Cells capable of generating and propagating electrical impulses, such as neurons and muscle cells.

Depolarization

A decrease in the difference in electrical charge between the inside and outside of a cell's membrane, critical for nerve impulse transmission.

Na+ Ion Channels

Protein channels in cell membranes that allow for the selective passage of sodium ions across the membrane, crucial for generating and transmitting electrical signals.