AQA Physics paper 1 Questions & Answers(Graded A+)

AQA Physics paper 1 Questions & Answers( Energy is transferred between stores - ANSWERThermal, kinetic, gravitational potential, elastic potential, chemical, magnetic, electrostatic, nuclear Energy is transferred... - ANSWERMechanically (by a force doing work), electrically (work done by moving charges), by heating or by radiation (like light or sound) When a system changes, energy is transferred - ANSWERIt can be transferred into or away from the system, between objects in the system or between different types of energy stores. Closed systems are where neither matter nor energy can enter or leave. The net change in the total energy of a closed system is always 0 kinetic energy - ANSWERenergy of motion - the greater an object's mass and the faster it is going, the more energy there will be in its kinetic energy store. Ek (j) = 1/2m(kg)v(m/s) squared Raised objects store energy in gravitational potential energy stores - ANSWERlifting an object in a gravitational field requires work, causing an energy transfer to the the GPE store of the object. Ep(j) = m(kg)g(n/kg)h(m) Falling objects transfer energy - ANSWERFalling objects transfer energy from its GPE store to its kinetic energy store. When there's no air resistance, energy lost from the GPE store = energy gained in the kinetic energy store Stretching transfers energy to elastic potential energy stores - ANSWERAs long as the limit of proportionality has not been exceeded, Ee (j) = 1/2 k (N/m) e (m) squared specific heat capacity - ANSWERthe energy required to raise the temperature of one grGraded A+)