Physics paper 1 stuvia - Study guides, Class notes & Summaries

AS PHYSICS Paper 1

Stuvia-2778008-aqa-a-level-physics-paper-1-exam Questions and Answers (2024/2025) (Verified Answers)

Stuvia-2778008-aqa-a-level-physics-paper-1-exam Questions and Answers (2024/2025) (Verified 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. ...

Energy Stores - ANSWER1) Elastic potential 2) Gravitational potential 3) Thermal 4) Electrostatic 5) Nuclear 6) Chemical 7) Kinetic 8) Magnetic 9) Light 10) Sound How is energy transferred? - ANSWER1) Mechanically - force doing work 2) Electrically - work done by moving charges 3) Heating/Radiation - light, sound How can work be done? - ANSWERWhen a current flows or by a force moving an object Kinetic energy formula - ANSWERE=1/2mv² Kinetic energy(J) = 0.5 x mass(kg) x s...

Current - ANSWER-Rate of flow of charge Coulomb - ANSWER-The amount of charge passing a point when a current of 1A flows for 1s Potential difference - ANSWER-The work done per unit charge in moving a small point positive charge between two points Threshold Voltage for a Diode - ANSWER-The voltage at which a current will begin to flow at, assumed to be +0.6V if not stated Reverse Bias - ANSWER-When very little currency can flow in the reverse direction of a diode Variable Resistor ...

Current - ANSWERRate of flow of charge Coulomb - ANSWERThe amount of charge passing a point when a current of 1A flows for 1s Potential difference - ANSWERThe work done per unit charge in moving a small point positive charge between two points Threshold Voltage for a Diode - ANSWERThe voltage at which a current will begin to flow at, assumed to be +0.6V if not stated Reverse Bias - ANSWERWhen very little currency can flow in the reverse direction of a diode Variable Resistor - ANS...

Question 1.1 - ANSWERIncrease Decrease What equation links current power and resistance? - ANSWERP=I^2R Calculate the resistance - ANSWERP= I^2R work out calc Write down the equation which links efficiency, total energy input and useful energy output? - ANSWEREfficiency = useful energy output/total energy input Calculate the useful energy output from this power station? - ANSWERX both num together Suggest why the student left the themometer in iron block for a few min before rec...

mass unit - ANSWERalways Kg time unit - ANSWERalways seconds (s) length unit - ANSWERalways metres energy unit - ANSWERalways joules unless specified otherwise. Gravitational field strength unit - ANSWERN/kg extension unit - ANSWERm specific heat capacity unit - ANSWERJ/Kg power unit - ANSWERWatts

conservation of energy - ANSWERlaw that says energy cannot be created or destroyed, but can change forms uses of friction - ANSWER- rubbing hands for warmth - break pads on bikes Increase efficiency - ANSWER- add lubricant - reduce friction internal energy - ANSWERthe sum of the kinetic and potential energies of all particles in the system Conduction - ANSWERThe direct transfer of heat from one substance to another substance that it is touching. Convection - ANSWERThe transfer o...