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Some change is a system known as maglev instead of wheels. In one version of maglev, magnets inside the track act on magnets inside the train, and when the train is at full speed it never touches the ground. The magnets never touch, but the force between them can be changed by adjusting them of current flowing through the trains control system. What force do these maglev trains reduce by using magnets. A - elastic
B- electrical
C- friction
D-tension

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