Physics, 05.11.2020 16:20 yulaarmstrong

Which statement BEST describes how magnetic forces can be harnessed to increase the speeds at which trains go? Select one:

Magnetic forces can be used to create the electricity the train needs for a power source.

Magnetic forces increase the attraction between the tracks and the wheels so that the trains do not fly off the tracks at high speeds.

Magnetic forces create a positively charged field; the negatively charged train wheels are repulsed and this force drives the train forward.

Magnetic forces can raise the trains off the track, reducing frictional forces acting against the train; less work is needed to propel the train.

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Which statement BEST describes how magnetic forces can be harnessed to increase the speeds at which...

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