Podcast
Questions and Answers
Which of the following mathematical expressions represents a linear function?
Which of the following mathematical expressions represents a linear function?
- y = 5 - 4x (correct)
- y = 3x^2 + 2
- y = 7x + 2x^2
- y = |x| + 1
What property does a variable expression exhibit if it contains both positive and negative terms?
What property does a variable expression exhibit if it contains both positive and negative terms?
- Rational
- Homogeneous
- Polynomial
- Inhomogeneous (correct)
What is the primary characteristic of a quadratic equation?
What is the primary characteristic of a quadratic equation?
- It has no constant term
- It contains only one variable
- It has at least one squared term (correct)
- It results in a straight line when graphed
Which of the following describes the graph of an exponential function?
Which of the following describes the graph of an exponential function?
Which type of equation can be solved using factoring methods?
Which type of equation can be solved using factoring methods?
Flashcards
String
String
A sequence of characters, treated as a single unit.
Character
Character
A data type that represents a single character, typically a letter, number, or symbol.
String Terminator
String Terminator
A special character that indicates the end of a string, often a null character.
String Concatenation
String Concatenation
Signup and view all the flashcards
String Substring
String Substring
Signup and view all the flashcards
Study Notes
Pressure and Heads
- Pressure is the measurement of force of water on a surface area, usually 1 square inch.
- Head is the height or column of water.
- PSI (Pounds per square inch) is a unit of pressure.
- PSI(A) (Pounds per square inch absolute) measures actual weight, including atmospheric pressure.
- PSI(G) (Pounds per square inch gauge) measures actual gauge pressure only.
- 1 cubic foot of water weighs 62.5 pounds.
- 1 cubic foot of water is equal to 6.25 imperial gallons.
- 1 gallon of water weighs 10 pounds.
- 1 PSI = 2.31 feet of water
- 1 inch of water column = 0.036 PSI
Unit Pressure
- Rule 1: PSI = head in feet x 0.434 PSI
- Rule 2: Head in feet = PSI x 2.31'
Total Force for Vertical Pipes
- Total Force = Area in square inches x pressure
- Total Force = (πR²) x PSI
Total Force for Tanks with Vertical Walls
- Total Force = Volume in cu.ft. x weight of 1 cubic foot of water
- Total Force = Length x width x height x 62.5
Review Questions
- Examples of converting PSI to feet or head to PSI are shown in the provided text.
- Converting feet of head to pressure.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
