A bell emits sound energv uniformly in all directions at a rate of 4.00 x 103 w. What is the intensity of the wave 100.0 m from the bell? 4x10 3 w/m2 Ob. 3.18x10-8w/m2 1x10-6 W/m2 Od. 4x10-6 W/m2

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Chapter1: Units, Trigonometry. And Vectors
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QUESTION 7
A bell emits sound energv uniformly in all directions at a rate of 4.00 x 103 w. What is the intensity of the
wave 100.0 m from the bell?
O a.
4x10-3 W/m2
Ob.
3.18x10-8W/m2
Oc.
1x10-6 W/m2
Od.
4x10-6 W/m2
QUESTION 8
Fully constructive interference between two sinusoidal waves of the same frequency occurs only if the
displacements caused by the two pulses are
a. travel in the same direction and are in phase
b. travel in opposite directions and are in phase
OC. travel in the same direction and are 180 o out of phase
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Transcribed Image Text:A Ims.cisjubail.gov.sa * Question Completion Status: Od. 333PA QUESTION 7 A bell emits sound energv uniformly in all directions at a rate of 4.00 x 103 w. What is the intensity of the wave 100.0 m from the bell? O a. 4x10-3 W/m2 Ob. 3.18x10-8W/m2 Oc. 1x10-6 W/m2 Od. 4x10-6 W/m2 QUESTION 8 Fully constructive interference between two sinusoidal waves of the same frequency occurs only if the displacements caused by the two pulses are a. travel in the same direction and are in phase b. travel in opposite directions and are in phase OC. travel in the same direction and are 180 o out of phase Click Save and Submit to save and submit. Click Save All Answers to save all answers. Sav
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