Definitions 0.0 / 5 ? PhysicsEnergyGCSEAQA Created by: 3mily05Created on: 28-09-19 19:03 Definitions: ... 1 of 12 Specific heat capacity The amount of energy needed to change the temperature of 1kg of a substance by 1oc. 2 of 12 Power The rate of energy transfer, measured in Watts, W. 3 of 12 Law of conservation of energy Energy cannot be created or destroyed. It can only be transferred, stored or dissipated. 4 of 12 Dissipated When energy spreads out into the atmosphere. 5 of 12 Energy efficiency The percentage or ratio of useful energy transferred compared to total energy in a system. It is not the amount of useful energy. 6 of 12 Renewable energy resource The energy resource will not run out or can be produced as quickly as it is being used. 7 of 12 Non-renewable energy resource The energy resource is limited and will run out. It is being used up faster than it can be produced. 8 of 12 Power Equation Power = energy ÷ time 9 of 12 Efficiency Equation 1 - Energy Efficiency = useful energy out ÷ total energy in (x100) 10 of 12 Efficiency Equation 2 - Power Efficiency = useful power out ÷ total power in (x100) 11 of 12 Equations: ... 12 of 12

## Comments

No comments have yet been made