Examination boards are very keen on asking students to apply their knowledge to real-world situations. One of the most important issues in the world today is climate change and one of the most important ways to address this is by switching from non-renewable energy sources to renewables. BP, which has long been thought of as … Continue reading Key Facts: Renewable Energy
Specific Heat Capacity and Energy Stores
Two ways are suggested in GCSE Physics for measuring the specific heat capacity of a material. I have already explained the electrical method (see here) but it looks likely, from the advanced information supplied by AQA, that the other method will feature in this summer's Trilogy physics examination. So here's what you need to know … Continue reading Specific Heat Capacity and Energy Stores
EM Waves: Uses and Dangers
Different EM waves are used for different applications, which you are expected to be able to recall and explain. We will go through some of these uses in this article, which is unavoidably long as there is a lot of information to cover. Your exam preparation should therefore involve making summary notes from the wealth … Continue reading EM Waves: Uses and Dangers
Energy Transfers in Electric Circuits
The amount of energy transferred in an electric circuit can be calculated by multiplying the current, time and potential difference. This is expressed in the equation given below. Current is measured in amps (amperes), time is in seconds, and potential difference in volts. Remember that the symbol for current is the letter I - not … Continue reading Energy Transfers in Electric Circuits
Slowing and Stopping
To conclude the recent series of posts related to different aspects of motion, we will now look at a real-world application of these ideas: in particular, the physics of slowing and stopping a road vehicle. An earlier post (from 2019) covered the two components of a vehicle’s overall stopping distance so I won’t repeat that … Continue reading Slowing and Stopping
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