Question: A new machine ( M ) with a sound power level of 98.5 dB is being installed in a factory workroom that is 40 ft

  1. A new machine (M) with a sound power level of 98.5 dB is being installed in a factory workroom that is 40 ft wide, 75 ft long, and 12 ft high. The workroom has an average sound absorption coefficient? of 0.03. The machine will be placed at one end of the room on the floor and up against a wall as shown in the floor plan below. An operator work station (WS) is initially placed 10 ft from the machine.

ASSUME THE PRODUCED NOISE IS MONOTONIC AT 1,000 Hz and THE MACHINE HAS NO INTERNAL DIRECTIVITY.

A new machine ( M ) with a sound power level of
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