Physics paper 1 0.0 / 5 ? PhysicsrevisionGCSEAQA Created by: stephanie aghaCreated on: 19-03-19 09:21 Energy The ability to do work 1 of 15 work done by an object Energy is transferred from the object 2 of 15 Work done on an object Energy is transferred to the object 3 of 15 Unit of energy and work done Joules (J) 4 of 15 The principle of conservation of energy Total amount of energy in a closed system is constant 5 of 15 Gravitational Potential Energy (GPE)- Joules mass(Kg) x gravitational field strength (N/Kg) x height (m)- (mgh) 6 of 15 Kinetic energy- Joules 0.5 x mass (kg) x speed^2 (m/s)- (0.5mv^2) 7 of 15 Elastic potential energy- Joules 0.5 x spring constant (N/m) x extension^2 (m)- (0.5 Ke^2) 8 of 15 Specific heat capacity Amount of energy it takes to increase the temperature of 1 Kg of a material by 1 degree Celsius 9 of 15 Specific heat capacity equation change in thermal energy (J) = mass (Kg) x specific heat capacity (J/kg degree Celsius) x change in temperature (degree Celsius)- 10 of 15 Power The rate at which energy is transferred and the rate at which work is done 11 of 15 Power equation (watts, W) Energy (Joules, J)/ time(Seconds,S) - (E/t) pleas note: energy can be replaced by work done, it's the same thing and same unit 12 of 15 The principle of conservation of energy Energy cannot be created or destroyed, it can only be converted from one form to another 13 of 15 System An object or group of objects 14 of 15 Internal energy the total kinetic and potential energy of all the particles that make up a system 15 of 15
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