om/assess4 4+ T/10 3T/10 -1 -2 -3 -4+ The graph above is a wave. The amplitude of this wave is The section width of this wave is > Next Question 3. Please use the origin (0,0) as the starting point of the graph and 2pi on the x-axis as the point where th graph ends. Find a function of the form y = Asin(x) or y = Acos(x) whose graph matches the function below. 51 37/2 -2 -3 -4 -5+ Give an exact answer using fractions and/or multiples of pi as necessary. y = OType here to search

QUESTION 6 Which of the following statements correctly describe dispersive waves? a. In the dispersion relation a=ck, the velocity of the propagating wave is independent of the wave number k. b. In the dispersion relation w =ck, the frequency of the propagating wave is depending on the wavelegth O c. In the dispersion relation m=ck the velocity of the propagating wave is depending on the wave number . d. In the dispersion relation w=ck, the frequency of the propagating wave is independent of the wavelength À.

If f (z,t) the wave equation is f(z.t) = 5 cos (10 z-30 t) in cm Then the angular frequency of the wave is (is pi) Select one: 0 а. 30 п O b. 10 O c. 5 O d. 3

Review I Constants Part A For sound waves in air with frequency 1000 Ha,a displecement amplitude of 1.2 x 10- m produces a pressure amplitude of 3.0 x 10- Pa Use t 344 m/s What is the wavelength of these waves? Express your answer with the appropriate units. For related problemsolving tips and strategies, you may want to viewa Video Tutor Solution of Amolitude otasound wave in air A- Value Units Submit Request Anwer Part B For 1000 Ha waves in air, what displacement ampitude would be needed for the pressure ampitude to be at the pain thveshold, which in 30 Pa? Express your anewer with the appropriate units. A- Value Units Submit Beavest Anewer

M 3. The vertical position, y, of any point on a rope that supports a transverse wave travelling horizontally is given by the equation: y = 0.5 sin(4πt + 5TTX) with x and y in meters and t in seconds. Find the: a. amplitude b. angular frequency c. frequency d. period e. wavelength f. wave speed g. angular wave number h. Does this wave travel in the +x or -x direction? mong is oscillated vertically with a frequency of 8Hz. The rope sustains following

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In an attempt to find the frequency of a wave is drawn, the time base was set to 5 ms per division and a trace of the waveform is as shown. What is the frequency? O A. 16.7 Hz O B. 33.3 Hz O C. 50.0 Hz O D. 100 Hz

A wave is modeled by the wave function y(x, t) 2п 3.8 m What are the amplitude (A), wavelength (A), wave speed (v), period (P), frequency (f), and wave number (k) of the wave? a. A = 0.24 b. λ = C. U= d. P = e. f = f. k= Submit Question EE m/s S Hz m-1 Hint 1 = (0.24 m) sin -(x-(17.6 m/s) t)

Why does ambulance sounds low pitched when it passes by? A. Wavelength contracts so frequency decreases B. Wavelength decreases do amplitude increases C. Wavelength decreases so amplitude decreases D. Wavelength expands so frequency gets lower

A bagpipe maker is working on one of the pipes for a new piece. Currently, if he uses the pipe to make a sound wave, it has a frequency of 220 Hz. He wants the pipe to make an A note, which has a frequency of 440 Hz. What should the bagpipe maker do to accomplish this? O A. He should double the length of the pipe which will double the wavelength and frequency. B. He should halve the length of the pipe, which will halve the wavelength and double the frequency. O C He should double the length of the pipe, which will halve the wavelength and double the frequency. D. He should halve the length of the pipe, which will double the wavelength and the frequency.