My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Thanks Tree1Thanks
  • 1 Post By scsims
Reply
 
LinkBack Thread Tools Display Modes
April 7th, 2015, 08:21 AM   #1
Member
 
Joined: Mar 2015
From: KY

Posts: 35
Thanks: 1

Logarithmic Question

Not quite sure where to start here. I've studied the logarithmic properties but can't seem to decide on where to get started.

Carl, the foreman at Atlantic Cycles, is concerned about noise levels in the factory. The Environmental Protection Agency has identified a maximum of 70 decibels to protect against hearing loss. The decibel is a logarithmic unit of measurement for loudness (intensity), and is defined as

L=10log10(P/Po)


where P is the sound pressure, and P0 is a reference level.

What is the value of P/Po if L = 90?
scsims is offline  
 
April 7th, 2015, 08:51 AM   #2
Global Moderator
 
greg1313's Avatar
 
Joined: Oct 2008
From: London, Ontario, Canada - The Forest City

Posts: 7,923
Thanks: 1122

Math Focus: Elementary mathematics and beyond
$\displaystyle \frac{P}{P_0}=10^9$

Can you figure out why?
greg1313 is offline  
April 7th, 2015, 01:41 PM   #3
Member
 
Joined: Mar 2015
From: KY

Posts: 35
Thanks: 1

Yep, got it now.

Thanks
Thanks from greg1313
scsims is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
logarithmic, question



Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
logarithmic derivative Hex Real Analysis 0 April 3rd, 2014 03:35 AM
logarithmic differention question SamFe Calculus 2 October 23rd, 2013 09:21 PM
a logarithmic sum islam Number Theory 5 December 8th, 2010 04:55 AM
Logarithmic sum. ZardoZ Real Analysis 4 November 24th, 2010 09:11 AM
logarithmic problem aldricj Calculus 3 April 10th, 2010 02:24 PM





Copyright © 2019 My Math Forum. All rights reserved.