Questions LLC
Login
or
Sign Up
Ask a New Question
Donthaveone:)
Questions and answers by visitors named
Donthaveone:)
Answers (1)
Ear defenders work because it is made out of certain material ... for example: rough and soft surfaces , soundw will get absorbed. Hard, flat and smooth surfaces sound bounces back. certain material as in: metal, acoustic foam thermoplastic, etc. They also
