Answer Happy

(13%) Problem 6: An audio engineer takes decibel readings at distances of r = 13 m and r2 = 22 m from a concert stage speaker during a sound check. When he is ry from the speaker, the engineer registers a decibel level of ß= 105 dB on his loudness meter. Randomized Variables r₁ = 13 m r2 = 22 m B₁ = 105 dB ▷ 33% Part (a) What is the intensity of the sound, /1, in watts per square meter, that is measured by the loudness meter when the engineer is a distance of r1 from the speaker? 4₁=1 sin() cotan() atan() acotan() cosh() cos() asin() Hints: 0% deduction per hint. Hints remaining: 4 sinh() tanh() cotanh() Degrees O Radians tan() л ( acos() Submit Hint 7 8 9 4 E AL 5 6 1 2 3 0 + - VOKAL + 350 I give up! Feedback: 0% deduction per feedback. Grade Summary Deductions Potential 05 100% Submissions Attempts remaining: 5 (5% per attempt) detailed view
33% Part (b) How much power P, in watts, is coming from the speaker during the sound check at distance r₁? P= sin() cos()) cotan() asin() atan() acotan() cosh() tanh() Degrees O Radians Hints: 0% deduction per hint. Hints remaining: 2 tan() acos() sinh() cotanh() Submit Hint л () 7 8 9 E 4 5 6 1 23 + - 0 VO BACKRACH Foodhars [ . HOME END CLEAR I give up! Feedback: 0% deduction per feedback. Gra Dec Pota Sub Atte (5% detal
à 33% Part (c) Assuming that the speaker output does not change between the two measurements at r; and r2, what sound intensity level 2, in decibels, will the loudness meter report when the engineer is at a distance r2 from the speaker? sin() cos() cotan() asin() atan() acotan() cosh() Hints: 0% deduction per hint. Hints remaining tan() (E I 7 8 9 acos() E 4 5 6 sinh() 1 2 3 tanh() cotanh() 0 IN Degrees O Radians Submit Hint 24 + TAME I give up! Feedback: 0 dodaction per feedback. Grade Summary Deductions Potential 05 100% Submissions Atempts remaining 5 (5% per attempt) detailed view