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).
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Related Physics GCSE answers
All answers ▸Resistors of 5 ohms and 10 ohms are connected in series with a battery supplying 3 volts. What is the total resistance ? And calculate the current in the circuit.
Person A, weighing 35 kg, is sitting 10m away from a seesaw pivot. Person B, weighing 50 kg, it sitting at the other end, at a distance d. Calculate d, in order for the seesaw not to topple over. (g=10m/s^2)
What is terminal velocity?
State Newton's 2nd Law, and use this explain the vertical motion of a parachutist in the descent from her plane to Earth.