A-Level Physics: AQA Year 1 & 2 Exam Practice Workbook - includes Answers: superb for the 2024 and 2025 exams (CGP AQA A-Level Physics)

£5.995
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A-Level Physics: AQA Year 1 & 2 Exam Practice Workbook - includes Answers: superb for the 2024 and 2025 exams (CGP AQA A-Level Physics)

A-Level Physics: AQA Year 1 & 2 Exam Practice Workbook - includes Answers: superb for the 2024 and 2025 exams (CGP AQA A-Level Physics)

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b The resultant force acting on an object as it travels around in a circle can be described as a centripetal force. Explore the wonders of the underwater world and develop theoretical and practical marine science skills.

c Calculate the increase in electrical potential energy when the +20 C charge is pushed from C to D. Remember that the gravitational force of one object on another depends on the distance between their centres of mass. c A piece of metal and a piece of plastic insulator each have the same dimensions and the same potential difference across them. The model can be used to explain many phenomena, and this exercise develops an understanding of the model at its simplest.ii Calculate the speed of an α-particle which has approximately the same energy as the β− -particle.

Kinetic model and internal energy In the kinetic model of matter, we picture matter as being made of many particles (atoms, ions or molecules). A radioactive nucleus decays with the emission of an α-particle and a γ -particle Describe the changes that occur in the proton number and the nucleon number of the nucleus. d You can estimate the maximum acceleration as follows: lay a ruler on the graph so that it lies along the steepest slope of the graph (at t = 12 s).Two horizontal forces act on the ship: the forward thrust provided by its engines and the backward drag force of the water. a Explain, using ideas about these forces why the initial downwards acceleration of the ball is 10 m s −2. Resolving forces A single force can be broken down (resolved) into two components at right angles to each other. Suggest two sources of uncertainty in the experiment and explain in each case how they affect the calculated value for g.



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