B. The resistance is directly proportional to length and inversely proportional to cross sectional area
Explanation:
the formula of speed is distance traveled by time it work
Answer:
9 m
Explanation:
i did the test and got 100%
"A is correct answer." The effective length of the tube is responsible for determining the frequency of vibration of the air column in the tube within a wind instrument. "Hope this helps!" "Have a great day!" "Thank you for posting your question!"
