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• #### Tension

##### Science›Physics›Newton's Laws of Motion
How to define and explain tension.
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tension
• #### Force

##### Science›Physics›Newton's Laws of Motion
Understanding the concept of force.
• #### Net Force- Resultant Force

##### Science›Physics›Newton's Laws of Motion
Understanding net force.
• #### Free-Body Force Diagrams

##### Science›Physics›Newton's Laws of Motion
Drawing and interpreting free-body force diagrams.
• #### Concept

##### Science›Chemistry›Matter
Understanding the law of conservation of mass.
• #### Exponential Growth and Decay - Problem 8

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
Application of Newton's Law of Cooling to show how long it takes an item to cool.
• #### The Resultant of Two Forces - Problem 1

##### Math›Precalculus›Vectors and Parametric Equations
How to find the resultant of two forces.
• #### The Resultant of Two Forces - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find the resultant of two forces at an acute angle (45 degrees).
• #### Navigation Problems - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How we find the course and groundspeed of an airplane when we are given its velocity and the wind velocity.
• #### Navigation Problems - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How we find the course and groundspeed of a complicated airplane problem when we are given its velocity and the wind velocity at 210 and 270 degrees.
• #### Entropy

##### Science›Chemistry›Thermochemistry
Understanding the concept of entropy.
• #### Concept

##### Science›Chemistry›Chemical Reactions
How to use stoichiometry to work with chemical equations.
• #### Entropy

##### Science›Physics›Heat and Thermodynamics
Understanding the concept of entropy.