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Find the sound absorption (in meter-sabin and in foot-sabin respectively) of a 5 ft ✕ 7...

Find the sound absorption (in meter-sabin and in foot-sabin respectively) of a 5 ft ✕ 7 ft glass window for sound waves of frequency 500 Hz and 4,000 Hz.

1. 500 Hz absorption=?  meter-sabin

2. Absorption=?  foot-sabin

3. 4,000 Hz absorption=? meter-sabin

4. Absorption=? foot-sabin

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