The Earth's Magnetic Field

Beschrijving

The Earth behaves like a giant bar magnet and as such there is a magnetic field present around it. The Earth’s magnetic field is thought to be caused by flowing liquid metals in the outer core of the planet which causes electric currents and a magnetic field.

Taal
English
Uitgever
Department of Higher Education
Publicatiedatum
Schepper/Auteur
Leigh Kleynhans

The concept of mechanical advantage

Beschrijving

The amount of effort saved when using machines is called mechanical advantage (MA). Simple machines use mechanical advantage as a key property to their functionality, helping humans perform tasks that would require more force than a person could produce. We will use the lever as an example of a simple machine to illustrate the concept of mechanical advantage.

Taal
English
Uitgever
Department of Higher Education
Publicatiedatum
Schepper/Auteur
Leigh Kleynhans

Resistance in an electric circuit

Beschrijving

Electrical devices convert the electrical energy carried by the charges into other types of energy such as heat, sound, and motion. Components in the appliance resist the flow of charge and are referred to as resistors. In this unit1 you will understand what resistance is, the factors that affect the resistance and the relationship between resistance and current.

Taal
English
Uitgever
Department of Higher Education
Publicatiedatum
Schepper/Auteur
Leigh Kleynhans

Calculations on motion in one dimension

Beschrijving

In this unit you will apply your understanding of the components of motion in one dimension using linear equations. This will help you to solve problems about motion in one direction and equip you to understand how these concepts apply to everyday life.

There are three equations for linear motion with constant acceleration. They can be used to calculate, and therefore predict, the outcome of motion when three out of the four variables are known.

Taal
English
Uitgever
Department of Higher Education
Publicatiedatum
Schepper/Auteur
Leigh Kleynhans

Two Axis Rotations

Beschrijving

Students learn about two-axis rotations, and specifically how to rotate objects both physically and mentally about two axes. A two-axis rotation is a rotation of an object about a combination of x, y or z-axes, as opposed to a single-axis rotation, which is about a single x, y or z-axis. Students practice drawing two-axis rotations through an exercise using simple cube blocks to create shapes, and then drawing on triangle-dot paper the shapes from various x-, y- and z-axis rotation perspectives.

Taal
English
Uitgever
University of Colorado Boulder
Publicatiedatum
Schepper/Auteur
University of Colorado Boulder