Results

This YouTube video delves into the impact that tourism can have on a country's economy.

• Determine the variables that affect how charged bodies interact.
• Predict how charged bodies will interact.
• Describe the strength and direction of the electric field around a charged body.
• Use free-body diagrams and vector addition to help explain the interactions.

This YouTube video delves into the impact that tourism can have on the environment.

In this unit you will learn:

• About the turning effect of forces
• Turning effects are called moments
• Understand that regular and irregular shaped objects have a centre of gravity
• An objects centre of gravity determines if it is in a stable, neutral, or unstable equilibrium

This video explains how to calculate the gradient (slope) of a straight line.

This YouTube video explains how to calculate an irregular area on a map.

This YouTube video explains how to calculate a regular area on a map.

Electric charge comes in two varieties, which we call positive and negative. Like charges repel each other, and unlike charges attract each other. Thus, two positive charges repel each other, as do two negative charges. A positive charge and a negative charge attract each other.

How do we know there are two types of electric charge? When various materials are rubbed together in controlled ways, certain combinations of materials always result in a net charge of one type on one material and a net charge of the opposite type on the other material. By convention, we call one type of charge positive and the other type negative.

This diagram, Vernier scale use 0.02 scale measurement is 19.44 mm, illustrates how to read the length of the given object using vernier calliper.