Question

Can someone please help with these 2 parts?

Part a A violinist in an orchestra plays the note middle A (440Hz). Which of the following objects will cast a substantial "sound shadow", blocking the sound of the note from being heard behind the object? Assume room temperature air Select the correct answer O of 3 attempts used O A column, 50cm across O The conductor, approximately 30cm across CHECK ANSWER None of the listed objects O All of the listed objects O A wall 2m across. Part b In the same orchestra, a tuba plays its lowest note, with a frequency of 30Hz. Which of the following objects will cast a substantial "sound shadow", blocking the sound of the note from being heard behind the object? Assume room temperature air. Select the correct answer 0 of 3 attempts used CHECK ANSWER A column, 50cm across O The conductor, approximately 30cm across O None of the listed objects O All of the listed object O A wall 2m across.

Answer 1

(a)

A wall 2m across

(B)

All of the listed objects..

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