physics-energy conservation

posted by Emma

some people refer to heat as "low grade energy.
a)how is low grade energy different from high grade energy?
b)give two example of high grade energy


When heating a cup of tea, which would be preferable...a stove with a burner on top, or a heating pad? High grade energy is energy that releases heat at high temperatures. Some add...without the release of pollutants..

oh i get it!thanks!

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