3. The following functions f(x, t) can representone-dimensional waves in elastic media, where A, a and b are positivecon

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3 The Following Functions F X T Can Representone Dimensional Waves In Elastic Media Where A A And B Are Positivecon 1 (48.65 KiB) Viewed 12 times

3. The following functions f(x, t) can representone-dimensional waves in elastic media, where A, a and b are positiveconstants. Which of these functions represents the traveling wave propagatingalong the - x direction? Multiple-Choice (10 Points) O A. f(x, t) = A sin ax · sin bt O B. f(x, t) = A cos(ax – bt) O c. f(x, t) = A cos arcos bt O D. f(x, t) = A cos(ax + bt) 4. The expression of mechanical wave is y = A cos(at - bx) (SI)with a and b two positive constants, then Multi hoice (10 Points) O A. it period is 27/a. O B. its wave length is /b. O C. its wave speed is b/a. O D. its frequency is a.