I think it’s C. Marshmallow and toothpicks are used to show the composition of a water molecule
"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!"
Answer:
<em><u>True:</u></em> because when u look thru a telescope you are making an observation
Explanation:
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