-Weight is measured in newtons (N). The weight of 1kg object on the Earth's surface is about 10N
-Energy is measured in Joules (J). The energy needed to lift a weight of 1N by a height of 1 metre is equal to 1 joule
-A sankey diagram is a digram that shows how we can represent any energy transfer where energy is wasted
-Becuase energy cannot be created or destroyed;
Imput energy (energy supplied)=useful energy delieverd + energy wasted
-For any device that transfers energy;
Efficiency= useful energy transferred by the device (x100%)
total energy supplied to the device
Comments
No comments have yet been made