A room 3 m X 6 m X 10 m has walls of average absorptivity 0.05. The floor is covered with a rug (a = 0.6), and the ceiling is wood (a = 0.1). ( a ) Calculate the average absorptivity. (b) Calculate the reverberation time from (12.3.4). (c) Calculate the reverberation time from (12.4.2) and compare with the answer to (b).

Q: (c) To evaluate the acoustic behaviour of a concrete wall, the propagation of a sound wave in air…

A:

Q: Find the wall thickness of this rigid polyvinylchloride (PVC) tube.

A: Outer diameter=2.375ft Inner diameter=2.181 ft

Q: 7. A PFR is not meeting effluent requirements so baffles are going to be added to the tank to…

A: Given data:- The given tank size, deep=12 feet wide=40 feet long=120 feet The given influent…

Q: II. From the figure shown the coefficient of friction are as follows: 0.23 at the floor, 0.28 at the…

A:

Q:

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Q: 6. Seawater (sg = 1.03) enters a heat exchanger through a reducing bend connecting a 4-inch copper…

A: Calculate the force required to hold the bend in equilibrium.

Q: 3. The absolute pressure inside the water of a lake in the summer: A. is the same at all points B.…

A: Absolute pressure is defined as the sum of gauge pressure and atmospheric pressure at a point

Q: 6. The room pictured has the following absorption coefficients at 500 Hz: Floor: Carpet, a = 0.14…

A: Given: Absorption Coefficients: 1. For Floor: α=0.14 2. For Ceiling:  α=0.70 3. For walls: α=0.10

Q: 3. Taking the coefficient of compressibility of water to be 2200 MPa, determine the pressure…

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Q: INCLINED MONOMETER EXAMPLE tube shown in Fig. than that at B. T 1m Determine the angle of the…

A: Answer given below Explanation:

Q: Determine the difference of pressure between points A and B in kPa. a 3.3m b 2.4m C 4.3m 2.3m 3.3m…

A:

Q: If 29.89 in Hg is barometric pressure then convert below,

A: Given that,Barometric pressure is 29.89 in Hg

Q: An open, clean glass tube is inserted vertically into a pan of water. What tube diameter is needed…

A: Given Data  Contact angle = 0°  Surface tension = 0.073 N/m  Liquid = Water (Hence density of water…

Finishing Operations

Finishing operations are the processes that are applied to the workpiece at the end of a manufacturing process, and after completing all other relevant operations that bring the product to its required dimensions. Finishing operations involve polishing, reducing the surface roughness, eliminating wrinkling, and grinding to enhance the surface texture and provide a better surface finish to the workpiece surface.