3 Mail * 9:40 PM instructure-uploads.s3.amazonaws.com * 34%10, 57. A sound wave

Question

3 Mail * 9:40 PM instructure-uploads.s3.amazonaws.com * 34%10, 57. A sound wave propagate with a velocity of 10 m/s and a frequency 5 Hz. What is the wave length? 11 of 12 Test GSCI110-P-2018 58. A sound wave propagate with a velocity of 20 m/s and has a wave length of 10 m. What is the wave frequency? 59. In warm air sund travels faster by 06 m/s per every 1-C. What is the velocity of sound in a very hot summer day when temperature is 40 'C? Note the velocity of sound at?°C is 331 m/s 60. A wave front has 2 Watts of power and it hits an area of 2 m2. What is the intensity of the sound in W/m2

Explanation / Answer

57. velocity = frequency * wavelength

wavelength = v / f = 10 / 5 = 2 m

58. frequency f = v / wavelength = 20 / 10 = 2 Hz

60 . Inetensity I = Power / area = 2 / 2 = 1 W/m^2

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