January 2019 0 21 Report
Sebuah sumber bunyi dengan taraf intensitas 40 dB terdengar pada jarak 3m jika jaraknya 30 m berapakah jarak intensitasnya tolong bantu

Life Enjoy

" Life is not a problem to be solved but a reality to be experienced! "

Get in touch

Social

© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.