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A rubber stopper sinks in water, but floats in methylene chloride. Place these three substances in order from least density to greatest density.
Opposite Polarity
A condition where two magnetic or electric fields have directions that are directly opposed to each other.
Static Charge
An unbalanced electrical charge confined to an object's surface, resulting from friction or induction.
Walking Across Carpet
An action that can cause the build-up of static electricity due to friction between two materials, leading to electrostatic discharge.
High-Voltage DC
A system used for the transmission of electrical power over long distances with high voltage in direct current form, reducing power losses and increasing transmission efficiency.
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