# CCEA Physics unit 2 solutions

## Wave Speed

Wave speed is given in meters per second (the number of waves that pass per second). Wavelength is measured in meters and frequency is measured in hertz (Hz), or number of waves per second.

## Demo

In this tutorial you will learn how to calculate the speed of a wave.

The equation for this calculation is written like this:

$v = { \text f \; \text x \; \lambda }$

## Chilled practice question

Calculate the velocity of a wave with a wavelength of 6 m and a frequency of 50 Hz

## Frozen practice question

Find the velocity of a wave which has a time period of 10 s and a wavelength of 24 m, you will need to calculate the frequency from the wave period equation first.

## Science in context

Wave speed is given in meters per second (the number of waves that pass per second). Wave Speed = FrequencyWave length. Wavelength is measured in meters and frequency is measured in hertz (Hz), or number of waves per second.

## Millie’s Master Methods

### Millie’s Magic Triangle

The ability to rearrange equations is the first step to successfully solve Physics calculations. Millie’s Magic Triangle Teaches you to be confident when transposing an equation allowing …

### Calculation Master Method

Performing and mastering this routine will guarantee you maximum marks when solving Physics calculations. Calculation Master Class Top Mark Routine Applying this technique will ensure you gain …

## The Fridge Physics Store

### Teacher Fast Feedback

Feedback to students in seconds – Voice to label thermal bluetooth technology Click …

### Get Fridge Physics Merch

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## Charge

The size of the current is the rate of flow of charge. Electrons are negatively charged particles which transfer energy through wires as electricity.

## What is Charge?

The size of the current is the rate of flow of charge. Electrons are negatively charged particles which transfer energy through wires as electricity. Charge is measured in coulombs (C). Electrons are really small and the effect of one electron would be really difficult to measure, It is easier to measure the effect of a large number of electrons. One Coulomb of charge contains 6 × 1018 electrons.

## Charge equation

To calculate Charge we use this equation.

$Q = { \mathit I \, \mathit t}$

## Charge demo

In this tutorial you will learn how to calculate the the charge flowing in an electrical circuit.

## Chilled practice question

Calculate the charge when a current of 16 A flows for 2 minutes.

## Frozen practice question

How long must a current of 26 A flow to transfer 936 KC.

## Science in context

The size of the current is the rate of flow of charge.

## Millie’s Master Methods

### Millie’s Magic Triangle

The ability to rearrange equations is the first step to successfully solve Physics calculations. Millie’s Magic Triangle Teaches you to be confident when transposing an equation allowing …

### Calculation Master Method

Performing and mastering this routine will guarantee you maximum marks when solving Physics calculations. Calculation Master Class Top Mark Routine Applying this technique will ensure you gain …

## The Fridge Physics Store

### Teacher Fast Feedback

Feedback to students in seconds – Voice to label thermal bluetooth technology Click …

### Get Fridge Physics Merch

Why not buy a Fridge Physics baseball cap, woollen beanie, hoodie or polo shirt, all colours and sizes available. Free delivery to anywhere in the UK! Fridge …
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