The correct answer to your question here is D
Answer:

v=343m/s
Explanation:
We have to take into account the expressions

if we assume that 256Hz is the fundamental frequency we have

and for wavelength

hope this helps!!
Answer:
if you look it up i think u can find it it could be a mealltiod Co 27
Explanation:
Answer:
make a parachute out of the bag connecting to a bowl made out of paper filled with cotton balls. then put the egg in the bowl.
Explanation:
the answer is True you can convert matter and energy