China intervened in the Korean War on behalf of North Korea. During the Cold War, Second World countries were aligned with the Soviet Union, exemplified by nations such as Poland and Hungary. ;
In 30 seconds, about 2.81 x 10^21 electrons flow through the electric device delivering a current of 15.0 A. This is calculated using the relationship between current, charge, and the charge of an electron. The total charge delivered is 450 C, which corresponds to the number of electrons calculated from this charge.
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