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What is characteristic of both sound waves and electromagnetic waves? (1) They require a medium. (2) They transfer energy. (3) They are mechanical waves. (4) They are longitudinal waves.
asked
May 13, 2016
Physics
high-school
2
answers
4
votes
47.0k
views
Is 4/16 equivalent to 0.25
asked
Feb 25, 2016
Mathematics
middle-school
1
answer
0
votes
117k
views
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