4) A guitar string, length L=6479 m, has mass 2.275 grams and when in tune, has tension F = 71.11 N. a) With mass in kg, find the linear mass density of the string, then the speed of the waves on the string. kg/m b) When oscillating in its fundamental mode (n = 1) what are A, and f₁? Lopen = m m/s. f₁ m This frequency causes an open tube to resonate, in air, in its second harmonic. c) What is the length of this open tube? Hz.

D, mm 1 0 00000000 The figure shows two waves traveling in the positive-x direction. The amplitude of the resultant wave is O 1.0 mm. O zero. O 1.8 mm. O 1.4 mm. O 2.0 mm.

QUESTION 5 A transverse wave completes 12 full oscillations in two seconds. The wave moves at 31.2 m/s. Find the distance between two adjacent crests on the wave (in m). QUESTION 6 The linear density of a guitar string is 8.0 x 104 kg/m. A wave on the string has a frequency of 400 Hz and a wavelength of 60 cm. What is the tension in the string? QUESTION 7 The mathematical expression of a wave is given by y = 4.2 m Sin ( 1.2 rad/m x – 9.6 rad/s t). What is the speed of the wave (in m/s)? QUESTION 8 What is the sound intensity (in µW/m2) at 1.86 m from a 4 mW loudspeaker emitting sound uniformly in all directions?