physics energys works and transfers Flashcards
what stores are transferred and how when a ball is thrown into the air?
chemical energy store of the arm muscles throwing the ball which transfers through mechanical working to the kinetic energy store of the arm and ball moving and mechanical working transfer to the gravitational potential energy of the ball when it reaches its tallest height.
What stores are transferred and how when a kettle boils?
The electricity transfers through electrical working to the thermal store of the heating element which is then transferred through heating by particles to the thermal store of the water.
What happens when energy transfers through mechanical working?
Involves a force, surfaces being in contact (sound waves)
What is energy transferred the same as?
Work done
How does friction work?
Kinetic energy of two textured surfaces moving transfers in mechanically working through friction in to the thermal energy stores.
What is wasted energy called?
The energy is dissipated.
What happens when a bike brakes?
The kinetic energy store is in the bike moving but when the brakes are applied it is transferred by mechanical working through friction to the thermal energy store as bike stops. The brakes will cool down so the energy in the thermal store is dissipated.
