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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N 10 N TIP If you see an angle of 90° in a question, you will probably have to use Pythagoras’ theorem. one precaution to enable the temperature of the wire to be constant for all readings and one other precaution to increase the accuracy of the result. The maximum length of the coaxial is determined by the minimum acceptable value of the signal-to-noise ratio at the receiver. On the lower set of axes, sketch the corresponding velocity–time graph using the information you have deduced above. in terms of the energy transferred by a source in driving unit charge around a complete circuit distinguish between e.

Since the antinode at the open end of the tube is slightly outside the tube, your method should involve the difference in the lengths of two air columns where there is a stationary wave. State two advantages for each of: a FM transmissions when compared with AM transmissions b AM transmissions when compared with FM transmissions.Notice it does not mention the word resistance at all, even though the unit of resistance is the ohm. d An electric field line shows the direction of the force on a negative charge placed at a point in a field. c Knowing that the beam is balanced (in equilibrium), we can say that there is no resultant force acting on it.

This diagram shows how the speed of a trolley can be measured using two light gates connected to an electronic timer. b Explain, using ideas about diffraction why this pattern becomes less bright towards the edge of the screen. c State whether the voltmeter and the ammeter used in your circuit should have a low or a high resistance.

Thermometers and temperature scales There are many different types of thermometer: liquid-in-glass, thermocouple, electrical resistance etc. The frequency of sound from the loudspeaker is gradually increased and the next mode of vibration is found. By using the Web site, you confirm that you have read, understood, and agreed to be bound by the Terms and Conditions. beta-particle: an electron (β−-particle −10e) or a positron (β+-particle +10e) emitted from a nucleus.

Scientists record a video of the bee as it lands and analyse the video to determine the height to which the ball swings. The same radiation received on Earth from a hydrogen cloud in a distant galaxy has a frequency of 1. By considering the ball’s horizontal motion, calculate the time taken for the ball to travel this distance. Use one of the equations of motion to deduce the train’s velocity just before it started to accelerate.c In your triangle, the forces will have the same directions as in the free body diagram but they will be shown head-to-tail.

ii For each of the two forces, state the force that is equal and opposite to it, as described by Newton’s third law. The x-axis measures time so find the number of divisions or squares for one cycle and then use the ‘timebase’ of 0. When the driver presses harder on the accelerator pedal, there is a resultant forward force of 510 N on the car. d Explain why the temperature of the water in beaker B falls more quickly than that of the water in beaker A. a Copy the diagram and add an arrow to show the direction of the Earth’s gravitational force F on the object.Particles in the atom and some decay equations This exercise give you practice completing decay equations making the proton number (or charge) and nucleon numbers match on either side of the equation. c Explain why resistivity is a property of the material from which a wire is made but the resistance per unit length of a wire is not. You can calculate the final temperature of the water like this: The steel and the water will reach the same final temperature.