PLEASE ANSWER
Which of the following statements about electromagnetic and mechanical wav...
PLEASE ANSWER
Which of the following statements about electromagnetic and mechanical waves is true?
A. Electromagnetic waves must travel through a medium, but mechanical waves do not require a medium.
B. Mechanical waves must travel through a medium, but electromagnetic waves do not require a medium.
C. Mechanical waves sometimes travel through a vacuum, and electromagnetic waves sometimes travel through matter.
D. Electromagnetic waves travel mostly through matter, and mechanical waves travel mostly through a vacuum.
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Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cmΒ³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4
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