Answered: As aids in conversions, note that 10 ft…

As aids in conversions, note that 10 ft = 3.05 m, 100 ft² 0.0002 μbar 10.8 ft². = 20 μPa, 1 ft² = = 9.29 m², 1000 ft³ = 28.3 m³, 1 metric sabin = 0.093 m², and 1 m² 1 English sabin =

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 17RQ: Convert 22C to Fahrenheit.

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Question

The reverberation time in a small reverberation chamber 9 ft x 10 ft x 11 ft is 4.0 s.

(a) What is the effective absorptivity of the surfaces of the chamber? (b) When 50 ft^2

of one wall is covered with acoustic tile, the reverberation time is reduced to 1.3 s.

What is the effective absorptivity of the tile? (c) What would be the reverberation

time if all surfaces of the chamber were covered with this tile?

As aids in conversions, note that 10 ft = 3.05 m, 100 ft²
0.0002 μbar
10.8 ft².
=
20 μPa, 1 ft²
=
=
9.29 m², 1000 ft³
=
28.3 m³,
1 metric sabin
=
0.093 m², and 1 m²
1 English sabin =

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