Top Posters
Since Sunday
y
2
m
2
m
2
u
2
m
2
B
2
M
2
e
2
k
2
N
2
y
2
m
2
This topic contains 1 attachment.
Home Q & A Board Science-Related Homework Help Physics
New Topic  
Chery Chery
wrote...
Go to Answer
Posts: 3587
Rep: 26 1
7 years ago
A certain factory whistle can be heard up to a distance of 9.8 km. Assuming that the acoustic output of the whistle is uniform in all directions, at what distance from the factory is the intensity level of the whistle sound equal to 25 dB? The threshold of human hearing is 1.0 × 10-12 W/m2.
A) 550 m
B) 660 m
C) 830 m
D) 940 m
E) 1100 m
Textbook 
College Physics

College Physics


Edition: 1st
Authors:
Read 427 times
3 Replies
Replies
Answer verified by a subject expert
noreyaganoreyaga
wrote...
#1
Top Poster
Posts: 650
Rep: 123 0
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
 Attached file 
Thumbnail(s):
You must login or register to gain access to this attachment.

Related Topics

Chery Author
wrote...
#2
7 years ago
Thanks a million
wrote...
#3
3 years ago
ty sm
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  556 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 8810
  
 422
  
 347
Your Opinion
What's your favorite coffee beverage?
Votes: 304
Previous poll results: How often do you eat-out per week?