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Potential energy to Kinetic energy
A Sankey Diagram
Example: TV. Electricity- Heat, light, sound. Useful energy transfers would be electricity- light, sound because that's what your TV actually needs, but electricity- heat would be wasted energy or a non-useful energy transfer because your TV does not need to produce heat, unless of course you can't afford central heating, but then isn't heating more important than a TV???? Summary: Useful energy transfer: The purpose of the object is fufilled by this transfer. Non-useful energy transfer: The purpose of the object is not fufilled by this transfer, and in effect, this transfer is a "side effect" of the useful energy transfer. These transfers waste energy.
Kinetic to potential
Chemical changes into Light and heat energy http://www .bbc.co.uk/schools/ks3bitesize/science/images/sci_dia_120.gif if you don't know how to do a energy transfer diagram copy and paste into bar ^ take out space after w, hope that helps! : )
Potential energy to Kinetic energy
by electricity
A Sankey Diagram
kainatic energy ------------------->moving car------------------------>light energy
An battery to light and back or Wires to TV and back.
Example: TV. Electricity- Heat, light, sound. Useful energy transfers would be electricity- light, sound because that's what your TV actually needs, but electricity- heat would be wasted energy or a non-useful energy transfer because your TV does not need to produce heat, unless of course you can't afford central heating, but then isn't heating more important than a TV???? Summary: Useful energy transfer: The purpose of the object is fufilled by this transfer. Non-useful energy transfer: The purpose of the object is not fufilled by this transfer, and in effect, this transfer is a "side effect" of the useful energy transfer. These transfers waste energy.
Kinetic to potential
Chemical changes into Light and heat energy http://www .bbc.co.uk/schools/ks3bitesize/science/images/sci_dia_120.gif if you don't know how to do a energy transfer diagram copy and paste into bar ^ take out space after w, hope that helps! : )
Stored- heat and light :) hope this helps
lol not sure
from negative to positive
When you use a microwave heat is generated by the friction of molecules within the food bouncing off one another. Radiant energy is sunshine waves of light.