Which of the following statements is true?
1.Cool air is less dense than warm air.
2.Sound does not require a medium for travel.
3.Magnetism is caused by the spinning motion of electrons.
4.Electricity flows from positive to negative areas.
Answers
Answered by
3
the correct statement should be 4 I think
Answered by
2
it think 4 but in reality electricity flows from negative to positive
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