Question

where a sensor registers the first minimum of a sound pattern with a frequency equal to 400hz that goes through a 1.80m wide door. the speed of sound is 345m / s

select the correct answer

a.28.54

b. 13.86

c. 18.79

d. 40.12

to what degree the sensor records the first minimum.

a.28.54 degrees

b.13.86 degrees

c. 18.79 degrees

d. 40.12 degrees

Answer 1

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