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How are electromagnetic waves are different than mechanical waves?
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a. electromagnetic waves are self-propagating and mechanical waves are not.
b. electromagnetic waves require a medium to travel and mechanical waves do not.
c. electromagnetic waves do not require a medium and mechanical waves do require a medium to travel.
d. electromagnetic waves are always transversal, while mechanical waves can be transverse, longitudinal, or torsional.
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How are electromagnetic waves are different than mechanical waves?
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