Answer:
I think B but I could be wrong
Explanation:
Ocean waves and sound waves are : mechanical wave. A and B aren't right at all. and C is wrong because they aren't electromagnetic.
Mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium.
Hope this help
Formula for net force: force= mass x acceleration
Answer:
denisity = 52.33 g/c
Explanation:
Density:

We have that m = 785 and that v = 15 c
.

d = 52.33 
F I’m not sure if I’m right but I think the answer is F