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AQA A Level PHYSICS PAPER 2 May 2024 Exam Questions and Answers
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Gravitational Field - Answer>> A region in which an object that has mass experiences a force Field Lines - Answer>> Arrows which indicate the direction and relative strength of a field. Arrows show the way in which a rest mass would experience the force of attraction. Equipotentials - Answer>> Lines drawn to indicate points of equal potential. Cross field lines at 90 degrees Newton's Law of Gravitation - Answer>> Every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centre's F ~~ Mm/r^ Gravitational field strength - Answer>> The force acting on a body per unit mass Gravitational Potential Energy - Answer>> Potential energy is the work done in moving an object with mass from Infinity to that point in the field E=-gMm/r for radial field E=mg•dh (Scalar) Absolute Gravitational potential - Answer>> The absolute gravitational potential at a point is the work done per unit mass in moving a body from Infinity to that point in the gravitational field V=-Gm/r (scalar)
Orbital time period - Answer>> GMT^2 =4pi^2 •r^3 therefore T^2 prop R^ orbital velocity - Answer>> (GM/r)^1/ escape velocity - Answer>> (2GM/r)^1/ Satellites in geosynchronous orbit - Answer>> T=24hrs Orbital Radius roughly 36,000km Remember the subtle difference between geosynchronous and geostationary, Which stay above the same point on Earth. Satellites in a non-geosynchronous/polar orbit - Answer>> Different, usually smaller T than earth. Activity - Answer>> Number of emissions per second measured in Bq Alternating Current (AC) - Answer>> A flow of electric charge that continuously changes its direction and magnitude Avogadro's Law - Answer>> equal volumes of gases at the same temperature and pressure contain equal numbers of molecules Boltzmann's constant - Answer>> a physical constant relating the average kinetic energy of particles in a gas with the temperature of the gas; it is the gas constant R divided by Avogadro's number (1.38x10^-23 J K^-1) Boyle's Law - Answer>> P1V1=P2V
Faraday's Law - Answer>> When there is relative movement between a conductor and a magnetic field the EMF induced in the conductor is equal to the rate of change of magnetic flux linkage 1st law of thermodynamics - Answer>> Q = dU + w Q=Heat energy supplied dU=Change In interval energy W=Work done by system in surroundings Flux - Answer>> Total magnetic field passing through a particular area Magnetic flux = flux density x Area Flux linkage - Answer>> Within a current carrying coil, the sum of the magnetic flux due to each loop of the coil Heat capacity - Answer>> The energy required to raise the temperature of an 1kg object by 1K in J per C Intensity - Answer>> The power of the wave transmitted through a unit area perpendicular to the direction of travel of the wave; unit watts per square metre Internal Energy - Answer>> The energy of a substance due to the sum of the Ek and Potential energy of all it's constituent particles Latent Heat - Answer>> The energy needed for a substance to change state. No change in temperature. Lenz's Law - Answer>> The direction of an induced current is such that it'll oppose the change of magnetic flux that caused it.
Flux density - Answer>> A measure of the strength of a magnetic field. The flux density is equal to the magnitude of the force on a unit length of current carrying wire per unit current; unit Tesla. Magnetic flux linkage - Answer>> The total magnetic flux linkage through a coil of area A and number of turns N Moderator - Answer>> Material used in a nuclear reactor to slow down neutrons to thermal speeds via a collision. E.g graphite or water. Motor effect - Answer>> A wire carrying a current in a magnetic field experiences a force this is known as the motor effect Natural frequency - Answer>> The frequency at which a vibrating object undergoes free vibrations, for example the frequency at which a tuning fork will oscillate when struck Permittivity - Answer>> The ratio of the electric displacement in the material to the intensity of the electric field producing it. permittivity of free space - Answer>> The permittivity of a medium is a measure of the material's ability to resist the formation electric field within it. Using a dielectric with a permittivity greater than that of free space (a vacuum) increases the capacitance of a capacitor Resonance - Answer>> Large amplitude vibrations caused when the driving frequency matches the natural frequency of a system Search coil - Answer>> A flat coil of insulated wire with a large number of turns. When connected to an oscilloscope the search
Work done - Answer>> The product of the force and the distance moved Thank you for your purchase! Need academic assistance? Look no further! 📚 From assignments to exams, essays to study guides, I've got you covered. Specializing in top-notch writing services, including essay writing, report drafting, and research & citation assistance. Whether you need help with assignments, online classes, exams, or academic writing tasks, I'm here to support you every step of the way. I also offer test banks, study guides, and exams for any subject at a favorable price. Access study materials from Stuvia, Docsity, Docmerit, and Course Hero. Feel free to DM me for more information. If you're satisfied with my service, I'd greatly appreciate a positive review! Your feedback helps me improve and assist more students like you. For compliments and complaints, please DM me. Additionally, I'm open to discussing any document or topic you need help with. Let's achieve academic success together! 🚀🚀 Contact Information: 🚀 Email: revisionmaterials01@gmail.com 🚀 Discord Server: Your Assignment Handler 💳 Payhip: Payhip Link 🚀 WhatsApp: Click here to chat 🐦 Twitter: @Assignment_P_A Feel free to reach out anytime for any academic assistance you need! Let’s Ace The Course Together…..!!!!!!!