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7.1.2 Exam: Semester 1 Exam
Question 1 of 30
3 Points
If an object sinks in water, its density is less than that of water.
O A. True
O B. False
SUBMIT

Can someone me with questions 15 to 17 plz.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Ineed ! i have no clue how to do this problem.