p8 Flashcards
where does the useful energy output go on a Sankey diagram?
top right?
where does the input energy go on a Sankey diagram?
left
where does the wated Oh for energy? Go on a Sankey diagram
bottom right?
what is true when there are energy transfers in a close system
there is no net change to the local energy in that system
give three ways that the energy of a system can be changed
through work done by forces, in electrical equipment, in heating
what is work done?
energy transferred
what happens to energy in all the system changes
it disappeared so that it is stored in less useful ways
when do chemical processes become wasteful
when they cause a rise in temperature, so dissipating energy in heating the surroundings
what is the definition of power?
The rate at which energy is transferred
