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Internal energy, temperature, and heat are closely related but distinct concepts. The microscopic particles that make up a body are in constant motion and may exert forces on ea...
There are two types of wave: longitudinal and transverse. It's really important to learn their properties as this is a very common question. The main thing to remember is longitudinal waves have oscillati...
Tensile stress is the force exerted per unit cross-sectional area on an object.
Tensile strain is the extension per unit original length of an object.
Isotopes are atoms with the same number of protons, but a different number of protons. Therefore, isotopes have the same atomic number but a different mass number.
An example of an isotope is carbo...
Figure 1 (AQA GCSE Science A Physics: Higher Tier):
The wind turbine costs £50 000 to buy and install.
The hydroelectric generator costs £20 000 to buy and install.
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