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Which statement correctly distinguishes between all mechanical and all electromagnetic waves?
Electromagnetic waves carry energy perpendicular to wave motion; mechanical waves carry energy parallel to wave motion.
Mechanical waves carry energy perpendicular to wave motion; electromagnetic waves carry energy parallel to wave motion.
Electromagnetic waves carry energy through a medium; mechanical waves carry energy through media and space.
Mechanical waves carry energy through a medium; electromagnetic waves carry energy through media and space.
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Mechanical waves carry energy through a medium; electromagnetic waves carry energy through media and space.
Reason: Mechanical waves require a material medium (solid, liquid, gas) to propagate; electromagnetic waves do not require a medium and can travel through vacuum (space). The options about "parallel"/"perpendicular" are incorrect because mechanical waves can be longitudinal or transverse, while electromagnetic waves are transverse.
Reason: Mechanical waves require a material medium (solid, liquid, gas) to propagate; electromagnetic waves do not require a medium and can travel through vacuum (space). The options about "parallel"/"perpendicular" are incorrect because mechanical waves can be longitudinal or transverse, while electromagnetic waves are transverse.
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