p1 energy Flashcards
energy
energy is always conserved is cannot be created or destroyed
an object can have energy in the following stores
kinetic energy
energy is measured in
joules (J)
energy ___when objects interact
energy in energy stores changes when objects interact
formular for kinetic energy
what each letter stands for and their unit
1/2 m v2
E=energy in (J)
M=mass in kg
v=speed (m/s) (velocity)
What type of heating only occurs in solids
Conduction
4 energy transferes
Mechanical work
Electrical work
Heating
Radiation
What donmetals have that make them good conductors
Delocalised electrons
Three methods of heating
Conduction
Convection
Radiation
Describe the relationship beween force and extention for onjects thay obey hooks law
Direct proportionality
What is described as the point beyond which hooked law is nolonger true when stretching materials
Limit of proportionality
