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Understanding DC motor mechanics

Explore how electricity initiates rotation in this detailed 3D animation. The video is available in over 20 languages, with ...
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National Guard's presence slashes D.C. crime rates, with seven days homicide-free

Warm end to week ahead of weekend rain and cooler temperatures.Friday stays warm with highs in the mid 70s ahead of a few rain showers late.Showers and cooler t Prince George's County approves $5K ...