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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)

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c A piece of metal and a piece of plastic insulator each have the same dimensions and the same potential difference across them. d In the diagram, the arrow on point A shows the direction in which the string at A is about to move. Outline how you could use the absorption properties of nuclear radiation to show that a radioactive source emits only γ-radiation. The maximum length of the coaxial is determined by the minimum acceptable value of the signal-to-noise ratio at the receiver.

Two-source interference experiments This exercise help you to think about the apparatus used and results found in two-source interference experiments.The table shows data for a filament lamp operated at a low voltage, when the temperature of the filament is only 20 °C and at a high voltage when the temperature of the filament is 2500 °C.

d State the distance in centimetres between a node and the nearest antinode and compare this distance with the wavelength λ of the progressive wave. e Sketch an amplitude–time graph to show how the amplitude decreases towards zero over a longer period of time. Equation 2 can be found by imagining that an object moves at a constant velocity equal to its average velocity.Describe how you would expect a real gas to behave as its temperature is reduced towards absolute zero. Detailed Learning support is provided throughout to help students to tackle the different exercises and build confidence to answer questions independently.

When the driver presses harder on the accelerator pedal, there is a resultant forward force of 510 N on the car. Using the equations of motion When using the equations of motion, you need to identify the ‘suvat’ quantities involved and the equation that links them. b Copy the diagram and draw the paths of the three α-particles as they approach and leave the nucleus.

Make sure that you give the distance (in cm) and the angle of its displacement relative to the horizontal.

c Draw the diagram and resultant again, with each wave having moved a further quarter of a wavelength in opposite directions. a By taking moments about the right hand end of the pole, determine the value of the tension in the cable T. Remember the stationary wave is not moving along – some of the points on it are just moving up and down and some points do not move up and down at all, they stay as zero all the time c Calculate the wavelength of the wave.d Calculate the work done on the child by this force as she moves from the top of the slide to the bottom. Complete the table to show the total power output of the heater when the switches are closed as shown.

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