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A charged particle moving perpendicular to a magnetic field has a magnet force on it.But when an observer moves with the particle,so that the particle has a relative velocity of zero with respect to the observer,one would expect there would be no magnetic force.Yet there is still a force.If it is not a magnetic force,then what is the source of this force?
Demonstrators
People who take part in public protests or gatherings to express opposition to or support for a particular cause or policy.
Demand
In economics, it refers to the desire and ability of consumers to purchase goods and services at given prices.
Bill Clinton
The 42nd President of the United States, serving from 1993 to 2001, known for his centrist New Democrat political stance and for being impeached in 1998, though he was acquitted by the Senate.
Foreign Policy
A government's strategy in dealing with other nations, focusing on diplomacy, economic interests, and military strategy to achieve national objectives.
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