What is the law of conservation of energy?
The law of conservation of energy states that energy cannot be created or destroyed it can only be transferred from one form to another. An example of this is when an object is falling: its gravitational potential energy is transferred to kinetic energy. In some systems the efficiency of this transfer may not be 100% and so energy can be dissipated to the surroundings (eg as sound, heat).
JR
Related Physics GCSE answers
All answers ▸what is ohm's law?
Astronauts on the ISS orbit Earth 16 times a day at a height of 400km above the surface. Given that the radius of Earth is approximately 6400km, how fast are the astronauts travelling?
Insulating a home costs £2000 and saves £50 a year. What is the payback time?
A force is applied to a box of mass 2kg so that is accelerates at 2ms^-2. Find the force acting on the box and thus calculate the work done in moving the box 10m in the direction of the force.