Gas Compression and Expansion

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This engineering resource, produced by Mathematics in Education and Industry (MEI) for the Royal Academy of Engineering, asks the question: how can you calculate the energy used, or made available, when the volume of a gas is changed? A bicycle pump, a refrigerator and the internal combustion engine change the volume of a gas or a liquid. Boyle’s law is used and students need to be able to integrate to complete the activities. Isothermal change and adiabatic change are considered. An interactive file graphs the motion of a piston in a cylinder. The mathematics covered in this resource is to: • Be able to interpret data • Distinguish between definite and indefinite integrals and interpret a definite integral as an area.

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