General Study Techniques

A measure of the concentration of a substance in the air, expressed as milligrams per cubic meter.

A measure of the concentration of a substance in the air, expressed as parts per million.

The lowest concentration of a flammable substance in air that will support combustion.

A measure of the density of a substance relative to the density of dry air at standard conditions.

The weight of one mole of a substance.

The process of breaking down a substance into smaller molecules or atoms.

A chemical change that results in the formation of a new substance with different properties.

Airflow speed in a duct, measured in cubic feet per minute (cfm).

The pressure difference between two points in a duct system due to the velocity of the air, measured in inches of water gauge (wg).

The pressure difference between a point in a duct system and the atmosphere, measured in inches of water gauge (wg).

The total pressure in a duct system, measured in inches of water gauge (wg).

The rate at which a substance, often a gas or vapor, is released into the air, measured in cubic feet per minute (cfm).

The acceptable concentration of a substance in the air, measured in parts per million (ppm).

The rate at which a liquid evaporates into the air, measured in pints per minute.

A safety factor applied to dilution ventilation calculations, ensuring sufficient dilution of a substance to prevent harmful exposure.

The amount of air needed to dilute a substance to an acceptable level, measured in cubic feet per minute (cfm).

The passageway on the palmar side of the wrist that connects the forearm to the middle compartment of the palm. It's made of bones and connective tissue and allows tendons and the median nerve to pass through.

The maximum amount of oxygen the body can use during intense exercise in a given time. It considers both the heart and lungs' performance and the ability to extract oxygen from blood.

Movement away from the central axis of the body or midline.

Movement that decreases the angle between two adjacent bones.

Movement that increases the angle between two adjacent bones.

Movement toward the central axis or midline of the body. The opposite of abduction.

The thin fluid-filled space between the two layers of pleura around each lung (visceral and parietal).

The inner layer of pleura covering the lungs and neighboring structures.

The outer layer of pleura attached to the chest wall.

Passageways that carry air from the nose or mouth to the alveoli (air sacs) of the lungs. They are branches of the bronchi and lack cartilage or glands.

The final velocity (v) of an object is calculated by adding its initial velocity (Vo) to the product of its acceleration (a) and the time (t) taken. This formula is useful for finding the final velocity when the initial velocity, acceleration, and time are known.

The distance (s) traveled by an object is calculated by adding the product of its initial velocity (Vo) and time (t) to half the product of its acceleration (a) and the square of time (t).

The formula for kinetic energy (K.E.) is calculated by multiplying half the mass (m) of an object by the square of its velocity (v).

This formula calculates the distance (s) traveled by an object based on its initial and final velocities (Vo and v) and acceleration (a). It's useful for situations where time isn't provided.

The formula for velocity in kilometers per hour (Vkph) is calculated by multiplying the distance (S) by the square root of the coefficient of friction (|x) and dividing by 3.6.

The formula for velocity in miles per hour (Vmph) is calculated by multiplying the distance (S) by the square root of the coefficient of friction (|x) and dividing by 2.24.

This formula finds the total velocity (Vfinal) by adding up individual velocities (V) along the way.

Kinetic energy (K.E.) can also be expressed in terms of the work (W) done on an object to change its velocity. It is calculated by dividing the work (W) by 2.

The formula for acceleration (a) in terms of velocity (v) and time (t) is calculated by dividing the change in velocity (v - Vo) by the time taken (t).

The formula for acceleration (a) in terms of final velocity (v), initial velocity (Vo), and distance (s) is calculated by subtracting the square of initial velocity (Vo^2) from the square of final velocity (v^2) and dividing the result by twice the distance (s).

A statistical method used to determine the relationship between two variables. It calculates the strength and direction of the linear association between them.

Represents the sum of all values in a dataset. Used to calculate other important statistics.

The value represents the mean or average of the independent variable (X) in a dataset. It's calculated by summing all the values of X and dividing by the total number of observations.

The value represents the mean or average of the dependent variable (Y) in a dataset. It's calculated by summing all the values of Y and dividing by the total number of observations.

Used in correlation analysis to calculate the strength and direction of relationship between two variables. The term is 'Sum of squares of X' and calculated by squaring each value in the independent variable (X) and summing all the squared values.