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Photoelectric materials emit electrons when they absorb light of a high-enough frequency.
Photoelectric materials emit electrons when they absorb light of a high-enough frequency.
Using position-time graphs and number lines to find displacement and distance traveled.
The potential energy between two objects due to long-distance forces can be thought of as being stored in a field. When the objects move due to the field forces, the energy stored in the field decreases
In this course you will learn about:
In this unit you will learn about different materials by investigating and observing the behaviour of their properties. This will include learning about the differences between metals and non-metals; whether they are isolators or conductors of electricity and heat, whether they are magnetic, how dense they are and whether they are acidic or basic.
By the end of this course you will:
What are simple machines? Simple machines are tools that make work easier. They have few or no moving parts. These machines use energy to do work with one movement. They make our work easier by letting us use less mechanical effort to move an object.
In this lesson you will learn about: