p1 - conservation and dissipation of energy 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: scarlett.xCreated on: 11-06-18 19:21 Conservation of energy energy cannot be created or destroyed 1 of 11 Dissipated energy/ dissipation of energy the energy that is not usefully transferred and stored in less useful ways 2 of 11 Efficiency useful energy transferred by a device total energy supplied to the device 3 of 11 Elastic potential energy energy stored in an elastic object as a result of it being deformed. For example, a stretched spring 4 of 11 Hooke's law the extension of a spring is directly proportional to the force applied, as long as its limit of proportionality is not exceeded 5 of 11 Input energy energy supplied to a device 6 of 11 Power the energy transformed or transferred per second. The unit of power is the watt (w) 7 of 11 Spring constant force per unit extension of a spring 8 of 11 Useful energy energy transferred to where it is wanted in the way that it is wanted 9 of 11 Wasted energy energy that is not usually transferred 10 of 11 Work the energy transferred by a force. Work done (joules, J) = force (newtons, N) x distance moved in the direction of the force (metres, m) 11 of 11
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