# Portland Community College

Course Number:
CMET 122
Course Title:
Global Energy Physics
Credit Hours:
4
Lecture Hours:
30
Lecture/Lab Hours:
0
Lab Hours:
30
Special Fee:

#### Course Description

Introduces physical properties of matter and energy, including properties of solids, liquids and gases. Presents applications of the basic equations of fluid mechanics, heat transfer, and the First Law of Thermodynamics, as well as application of these concepts to the human population's energy supply and demand. Prerequisites/concurrent: CMET 121, CMET 123. Audit available.

#### Intended Outcomes for the course

Upon completion of the students should be able to:

1. Identify physical properties of matter and energy including properties of solids, liquids, and gases.
2. Utilize basic equations of fluid mechanics, heat transfer, and the First Law of Thermodynamics.
3. Assess critically the energy supply and demand of the human population as well as that of individual countries.

#### Outcome Assessment Strategies

• Evaluation will include tests, homework and a final project.
• Specific details of the grading procedure will be given the first week of class.
• Lecture, homework, project and laboratory work will be coordinated.

#### Course Content (Themes, Concepts, Issues and Skills)

1. A background in the topics covered in Global Energy Physics are needed in preparation for the subjects covered more in depth in Materials Technology, Fluid Mechanics, and Thermodynamics courses.
2. Mechanical properties of gases, liquids, and solids must be understood in order to analyze and design machines, structures, and other engineering products.

CONTENT:

WORK, ENERGY, AND POWER

Instructional Goal:
To develop skills in solving problems involving work, energy, and power.

Objectives:

1.1.0  Define work, kinetic energy, potential energy, power, and efficiency.   Understand the concept of principle of conservation of energy, interchange of work, kinetic and potential energy.

1.2.0 Solve problems involving transformation of work and energy, using the principle of conservation of energy.

1.3.0 Solve problems involving calculation of power and efficiency.

1.4.0 Assess the current and future energy supply and demand on a worldwide basis as well as for individual countries.

MECHANICAL PROPERTIES OF MATTER

Instructional Goal:
To present the molecular model of matter and to see how the behavior of solids, liquids and gases can be understood in light of this model and to develop equations that will predict the behavior of matter.

Objectives:

2.1.0 Present the molecular model of matter and discuss how the forces of attraction and repulsion affect matter.

2.2.0    Discuss the behavior of solids and solve problems involving:

2.2.1  Density
2.2.2  Specific Gravity
2.2.3  Hookes Law and Moduli of Elasticity
2.2.4  Stress and Strain
2.2.5  Factor of safety
2.2.6  Compressibility
2.2.7  Shear
2.2.8  Torsion

2.3.0 Discus the behavior of liquids and solve problems involving:

2.3.1 Surface Tension
2.3.2 Hydrostatics (pressure and force)
2.3.3 Pascals law
2.3.4 Archimedes Principle
2.3.5 Specific Gravity
2.3.6 Hydraulics
2.3.7  Bernoullis Principle

2.4.0 Discuss the behavior of gases and solve problems involving:

2.4.1  Boyles Law
2.4.2  Charles Law
2.4.3  Gas density
2.4.4  Barometers and manometers

THERMODYNAMICS
Instructional Goal:
To discuss heat and its transformation into other forms of energy and to develop equations to describe and predict energy transformation.

Objectives:

3.1.0 Understand the difference between temperature and heat energy.

3.2.0 Solve problems pertaining to:

3.2.1 Fahrenheit/Celsius temperature conversion.
3.2.2 Thermal expansion.
3.2.3 Pressure, Volume and Temperature relationships of gases.
3.2.4 Heat and change of state.

a.       Heat of vaporization
b.       Heat of fusion

3.2.5   Heat transfer in various solids.
3.2.6 Conservation of energy.