2. A disc 30 cm diameter and 4 cm thick and density 0.0078 kg/cm3 oscillates at...
2. A disc 30 cm diameter and 4 cm thick and density 0.0078 kg/cm3 oscillates at a frequency of 5 Hz on one end of a shaft which is built-in at the other end. When an unknown disc is added to the first disc, the frequency is reduced to 3.4 Hz. Find the moment of inertia of the unknown disc. Ans. 0.289 kg m2
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2. A disc 30 cm diameter and 4 cm thick and density 0.0078
kg/cm3 oscillates at...
The mass density of a 115 cm long, 0.724 mm diameter string is 1.85 x 10-4...
The mass density of a 115 cm long, 0.724 mm diameter string is 1.85 x 10-4 kg/m. Determine the tension needed in the string to have the same fundamental frequency as E (330 Hz). If the diameter of the string were decreased to 0.699 mm, but the mass density remains the same, will the tension increase, decrease, or remain the same to produce the same E fundamental frequency? Explain. What is the length of a closed pipe necessary to have...
A steel (density 7.86 x 103 kg/m3) wire of length 1.20 m and diameter 0.644 mm...
A steel (density 7.86 x 103 kg/m3) wire of length 1.20 m and diameter 0.644 mm is subjected to a tension of 34.5 N. At one end of the wire is an oscillator harmonically oscillating one end of the wire at a frequency of 60 Hz, the other end of the wire runs over a pulley to a hanging mass that supplies the tension.What is the wavelength of the waves produced by the oscillator?
2.) The 2nd harmonic of a violin string with a length of 32 cm (between the fixed ends) and density of 0.15 kg/m resonates with the third harmonic of a 2.0-m long organ pipe with one end closed an...
2.) The 2nd harmonic of a violin string with a length of 32 cm (between the fixed ends) and density of 0.15 kg/m resonates with the third harmonic of a 2.0-m long organ pipe with one end closed and the other end open. (a) Draw a diagram for the problem, labelling the known and unknown variables. In your diagram, e standing waves for both the violin string and the organ pipe. For the organ pipe, graph the standing wave in...
A right triangle has hypotenuse 13 cm and one side 7 cm. Find the length of...
A right triangle has hypotenuse 13 cm and one side 7 cm. Find the length of the other side, and the sine, cosine and tangent of each of the other two angles. A man running 4 m/s is passed by a car at 20 m/s, both heading East. What is the velocity of the man relative to the car? How far apart are the 20 seconds after the car passes the man? A ball is thrown vertically upwards from the...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...
2.) The 2nd harmonic of a violin string with a length of 32 cm (between the fixed ends) and density of 0.15 kg/m resonates with the third harmonic of a 2.0-m long organ pipe with one end closed and the other end open. (a) Draw a diagram for the problem, labelling the known and unknown variables. In your diagram, e standing waves for both the violin string and the organ pipe. For the organ pipe, graph the standing wave in...
A right triangle has hypotenuse 13 cm and one side 7 cm. Find the length of the other side, and the sine, cosine and tangent of each of the other two angles. A man running 4 m/s is passed by a car at 20 m/s, both heading East. What is the velocity of the man relative to the car? How far apart are the 20 seconds after the car passes the man? A ball is thrown vertically upwards from the...
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