A wave is produced in a given string by an oscillator that wiggles one end of that string up and down at a given frequency, f. What happens to the wave number, k, if the frequency is increased by a factor of four? a) k is 1/4 as big b) k is 1/2 as big c) k is constant d) k is 2x as big c) k is 4x as big

A wave source has a wavelength of 0.60 m. Which of the following scenarios could cause the observer to detect a wavelength of 0.90 m? a. The source is moving towards the stationary observer at 18 m/s b. Both the source and observer are moving to the right at 18 m/s c. The source is moving towards the observer at 18 m/s as the observer moves towards the source at 18 m/s d. The source is moving away from the stationary observer at 18 m/s

Order the following waves by their wave vector. Negative wave vectors are less than positive wave vectors. a) y(x, t) = 4 sin(x - t) b) y(x, t) = 4 sin(-x- - t) - c) y(x, t) = 4 sin(2x - 5t) d) y(x, t) = sin(-2x - t) a) > c) > d) > b) d) >b) > c) > a) c) = d) > a) = b) c) > a) > b) > d) A

The wave speed on a string is 775 m/s periodic waves are generated on that string by an oscillator with a period of 1.55 x 10^-4 seconds.  A) What is the wavelength of these periodic waves on the string?   B) At what frequency should the oscillator vibrate so that the wavelength is 28.0 cm?