Constants I Periodic Table Suppose two linear waves of equal amplitude and frequency have a phase difference o as they travel in the same medium. They can be represented by D1 = A sin(kæ – wt) D2 = A sin(kx – wt + ø). Part A Use the trigonometric identity sin 01 + sin 02 = 2 sin (01 + 02) cos (01 – 02) to find the resultant wave. Express your answer in terms of the variables A, k, x, w, t, and o. ΠV ΑΣφ D = Submit Request Answer Part B What is the amplitude of this resultant wave? Express your answer in terms of the variables A and d. Ap, +D2 = Submit Request Answer

i need clear ans by hand and solve very very fast in 20 min and thank you | DYBALA 7.22 The speed of propagation of a surface wave in a liquid of depth much greater than λ is given by = V= gλ 2п + 2πΥ βλ where g acceleration of gravity, A = wavelength, p = density. Y surface tension. Compute the group velocity of a pulse in the long wavelength limit (these are called gravity waves).

Constants I Periodic Consider a sine wave traveling down the stretched two- part cord of the figure.(Figure 1) Determine a formula for the ratio of the wavelengths in the two sections. (The frequency is the same in both sections.) Express your answer in terms of the variables µH and uL. ? Ан Submit Request Answer Figure 1 of 1 Part C Light section Heavy section Is the wavelength larger in the heavier cord or the lighter? (a) in the heavier cord Transmitted in the lighter cord pulse Submit Request Answer Reflected pulse (b) Provide Feedback II

☆ A student is studying simple harmonic motion of a spring. She conducts an experiment where she measures the amplitude and period of an undamped system to be 27+/-1 mm and 0.40 +/-0.020 seconds, respectively. Using the equation for displacement as a function of time y (t) = A cos (wt), what is the uncertainty of her displacement calculation in mm for t 0.050+/-0.0010 seconds? Round your answer to 2 decimal places for entry into Canvas. Do not enter units. Example: 123 Type your answer...

Two strings on a musical instrument are tuned to play at 392 Hz (G) and 494 Hz (B). Express your answers using three significant figures. Πν ΑΣφ ? lB Submit Request Answer Part E If their masses and lengths are the same, what must be the ratio of the tensions in the two strings? Express your answers using three significant figures. ? Fr,G FT,B Submit Request Answer II

ConstantS I Periodic Table (Figure 1) shows a standing wave on a string. Point A on undo ng is shown at time t = 0. Part A For t >0, what are the earliest times, in terms of the wave's period T , that points B, C, and D reach the positions shown? Express your answer in terms of T separated by commas. ? tв, tc, tp 3D Submit Request Answer Provide Feedback Next > Figure 1 of 1 > A В D C

Item 13 Sunspot Observations Sunspots vary in number as a function of time, exhibiting an approximately 11-year cycle. Galileo made the first European observations of sunspots in 1610, and daily observations were begun in Zurich in 1749. At the present time we are well into the 23rd observed cycle. Part A What is the frequency of the sunspot cycle? Give your answer in Hz. Express your answer using two significant figures. ΠΙΑΣΦ f = Submit Provide Feedback Request Answer ? Hz