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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State whether the collisions between the particle and the walls of the cube are elastic or inelastic. Using your diagram, join up all the points on one side of the point A where the path difference is λ. For a double-slit experiment, suggest how the wavelength of the microwaves leads to differences in the quantities a, x and D as compared with those used in light experiments.

The displacement of an oscillating mass can be represented by an equation of the form x = x0 sin ωt, where x0 is the amplitude of the motion. m. This light cannot be detected by the human eye on Earth as the violet light is shifted into the infra red part of the spectrum. a Explain, using ideas about these forces why the initial downwards acceleration of the ball is 10 m s −2.

e By considering the difference between the isotopes in the table, suggest why some isotopes emit β− -radiation and some emit β+ -radiation. Use one of the equations of motion to deduce the train’s velocity just before it started to accelerate. Iestyn Morris studied Physics at Aberystwyth before being awarded the Sir Granville Beynon prize there and graduating with first class honours for his degree. Your graph should show the amplitude of oscillation decreasing significantly in the time of about five oscillations. a Explain how you can tell from the pattern of the field lines that this is a uniform electric field.

a Copy the diagram onto a piece of graph paper, leaving enough space below for three similar diagrams. The same radiation received on Earth from a hydrogen cloud in a distant galaxy has a frequency of 1. Identifying forces You can determine how an object will move by considering all the forces acting on it. Outline how you could use the absorption properties of nuclear radiation to show that a radioactive source emits only γ-radiation.b Calculate the frequency heard by the observer as the aircraft moves away from him at the same speed. Remember that field lines always enter a charged surface at right angles; also, remember the direction of the arrows on field lines. For example: if an aircraft is flying NE at 300 m s−1, calculate the component of its velocity in the direction due east.

The ADC samples the analogue signal five times a second and converts the signal into a 4-bit number, such as 1001.e Explain whether energy losses to the surroundings mean that your estimated value for L in part c above is an under-estimate or an over-estimate. Superposition and interference This exercise helps you to think about interference and path difference.