GCSE PHYSICS 5.0 / 5 based on 1 rating ? PhysicsCHAPTER 1GCSEAQA Created by: StudentCreated on: 14-11-18 19:39 What is gravitational potential energy? mgh 1 of 10 What is elastic potential energy and how can you increase it? 1/2ke^2. Increase EPE by increasing the extension of the spring ,e, in metres or by increasing the spring constant ,k, in N/M 2 of 10 What is Kinetic energy and how can it increase? 1/2mv^2. Increasing the mass of the object or by increasing the speed 3 of 10 What is work done and its formula? Wd= fxs. Work done is a force which can be increased by enlarging the force or if it moves further. 4 of 10 Power definition? P= W/T or P=E/T 5 of 10 What is specific heat capacity? The measure of how energy is needed to raise the temperature of 1kg of a substance by 1 degrees 6 of 10 What is change in thermal energy? Change in thermal energy= mass x specific heat capacity x change in temperature 7 of 10 What is energy efficiency? Energy efficiency= useful output energy transfer/total input energy transfer 8 of 10 What are renewable energy resources? Examples Solar, wind and hydroelectric. Also thermal energy from hot rocks 9 of 10 What are non renewable resources? Examples Fossil fuels 10 of 10
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