conservation of energy
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How is energy defined? What is the conservation of energy?
The ability to do work. Energy can’t be created or destroyed only transferred.
Name 8 types of energy?
GPE, KE, chemical, kinetic, electrical, sound, thermal, nuclear, elastic potential
What’s the formula for GPE?
GPE = m x g x h
What’s the formula for KE?
KE = 1/2 x m x v^2
What are 4 energy pathways?
mechanically electrically by heating by radiation
What are 4 energy pathways?
mechanically electrically by heating by radiation
What’s the formula for efficiency?
useful/total
If a system is open… If a system is closed…
energy can be transferred in & out energy cannot be transferred to surroundings
What is dissipation?
Energy transferred by heating & radiation that spread to surroundings.
How can friction be reduced?
Lubrication