A 25 g string is under 21 N of tension. A pulse travels the length of the string in 42 ms. Part A How long is the string?
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- A spool of wire 150 m long has a mass of 0.190 kg when weigh on a scale. This string is used to set up a standing wave laboratory demonstration between two posts 3.0 m apart. Part A If the desired second harmonic frequency is 75 Hz, what should be the required string tension? Express your answer using two significant figures. Fr= hmit Benunst Answer NDuring takeoff, the sound intensity level of a jet engine is 160 dB at a distance of 34 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer with the appropriate units.A 27.0 cm -long wire with a linear density of 20.0 g/m passes across the open end of an 88.0 cm - long open-closed tube of air. If the wire, which is fixed at both ends, vibrates at its fundamental frequency, the sound wave it generates excites the second vibrational mode of the tube of air. What is the tension in the wire? Part A Assume vsound = 340 m/s. Express your answer with the appropriate units. ? HA Value
- Part A What fundamental frequency would you expect from blowing across the top of an empty soda bottle that is 24 cmcm deep, if you assumed it was a closed tube? The speed of sound in air is 343 m/sm/s. Express your answer to two significant figures and include the appropriate unitsPart B What fundamental frequency would you expect if the bottle was filled with soda for height of 11 cmcm ? Express your answer to two significant figures and include the appropriate units.AA mass of 0.75 kg stretches a spring 0.05 m. The mass is in a medium that exerts a viscous resistance of 57 m N when the mass has a velocity of 6 The viscous resistance is proportional to the speed of the object. S Suppose the object is displaced an additional 0.07 m and released. m Find an function to express the object's displacement from the spring's natural position, in m after t seconds. Let positive displacements indicate a stretched spring, and use 9.8 as the acceleration due to s² gravity. u(t) = .07(e-6.33t) sin(1 -6.33t) sin 12.487t + K|2 X
- A guitar string is vibrating in its fundam ental mode, with nodes at each end. The length of the segment of the string that is free to vibrate is 0.389 m. The maximum transverse acceleration of a point at the middle of the segment is 8200 m/s? and the maximum transverse velocity is 3.10 m/s. Part A What is the amplitude of this standing wave? Express your answer in meters. Πνα ΑΣφ A = m Submit Request Answer Part B What is the wave speed for the transverse traveling waves on this string? Express your answer in meters per second. v = m/s Submit Request AnswerA 1.0-m-tall vertical tube is filled with 20°C water. A tuning fork vibrating at 580 Hz is held just over the top of the tube as the water is slowly drained from the bottom. Part A At what water heights, measured from the bottom of the tube, will there be a standing wave in the tube above the water? Express your answer in meters. If there is more than one answer, enter your answers in descending order separated by commas. h = Submit 15. ΑΣΦ ΑΣΦΑ Request Answer Como ? md. What is the frequency, f of the block’s motion? e. What is the first time the block is at the position x=0? (1) f. When is the block first at the position x = 0.042 m?
- During takeoff, the sound intensity level of a jet engine is 150 dB at a distance of 32 m. Part A What is the sound intensity level at a distance of 1.0 km? Express your answer with the appropriate units.An osprey's call is a distinct whistle at 2200 Hz. An osprey calls while diving at you to drive you away from its nest. You hear the call at 2300 Hz. Part A How fast is the osprey approaching? Express your answer with the appropriate units. v= μA Value Units ?Some caterpillars, when under attack by birds, emit high-pitched whistles by sharply forcing air through openings in their thorax. (Eigure 1) is an experimental graph of intensity versus frequency for a caterpillar whistle. Assume a sound speed of 340 m/s. Figure Intensity 0 10 20 30 40 50 < 1 of 1 -f(kHz) Correct Part B What is the length of the tube? Express your answer with the appropriate units. L- 0.0189 Submit m Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining