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15 Cards in this Set
- Front
- Back
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What is matter?
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Anything that occupies space and has weight
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What are the three states of matter?
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Solids, liquids, and gases
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What is the standard atmospheric pressure at sea level?
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It is considered to be 14.7 p s i or 29.92 inches of H g.
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What is the name of the atmospheric phenomenon where cool air is trapped near the earth by warm air?
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A temperature inversion
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What is the speed of sound through the air under standard sea level conditions?
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It is 662 knots and 761 m p h
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What determines the density of the air (density altitude)?
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The temperature and pressure acting upon it
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What are the three basic parts of a lever?
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The fulcrum, force of effort, and resistance
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What is a first-class lever, and give an example.
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A first-class lever is when the fulcrum is located between the effort and the resistance. An example of a first-class level is a seesaw.
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In what direction is force transmitted in a confined fluid?
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Force is transmitted equally in all directions.
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What is the formula for computing force, pressure, and area?
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Force equals pressure times area or F = P x A
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What is absolute zero?
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It is the temperature at which all motion of the molecules will cease entirely in a given sample of gas. It is considered to be -273 degrees C.
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What are the two factors involved in work?
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Force and movement through a measurable distance
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How is pressure expressed in hydraulics and pneumatics?
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It is expressed in pounds per square inch (p s i).
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What are three methods of heat transfer?
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Conduction, convection, and radiation
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What are the three types of friction?
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Rolling, sliding, and static
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