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Heat and temperature
The electric and gravitational fields
Work and energy
Electricity and magnetism
Modern physics
Forces and pressure
Matter
Movement
Measure and scientific method
Waves
Optics
biomass energy
chemical energy
coal
conservation of energy
conservation of energy (I)
Conservation of energy (II)
Efficiency of a machine
electrical energy
energy sources
energy transfer (II)
forces do work
fossil fuels
graph representing work
hydraulic energy
kinetic energy
mechanical energy
natural gas
nuclear energy
Nuclear power station
petroleum
potential energy
power
power (II)
radiant energy
renewable energy sources
solar energy
thermal energy
tidal energy
transformation of energy
What is energy?
what is work?
What is work? (II)
wind energy
work carried out by a pendulum
work done streching a spring
work of friction
work-kinetic energy theorem
Work and energy