Which of the following is most effective at absorbing low frequency sound?
A) Concrete.
B) Porous materials.
C) Single layer gypsum panels.
C) Single layer gypsum panels.
Trades & Technology
You might also like to view...
Which of the following is the only EPA-approved refrigerant that can be used for leak testing?
a. HFC-410A b. HFC-134a c. HFC-407C d. HCFC-22
Trades & Technology
The three categories of animal health products are ____________________, ____________________,
and ____________________.
Fill in the blank(s) with the appropriate word(s).
Trades & Technology
The stator fits in the frame of the AC generator, between the front and rear halves of the cast aluminum housing.
Answer the following statement true (T) or false (F)
Trades & Technology
Four bricks, each weighing 4.5 pounds, drop 20 feet onto a scaffolding plank. How much force in foot-pounds is exerted on the scaffolding?
What will be an ideal response?
Trades & Technology