Ask Experts Questions for FREE Help !
Ask
    mapp3's Avatar
    mapp3 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 4, 2015, 12:33 PM
    Logarithms
    A constant tone is being applied to a speaker. The voltage across the speaker is 5 volts. The voltage across the speaker is increased to 15 volts in order to increase the sound level. What is the decibel gain, rounded to the nearest decibel?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #2

    Oct 5, 2015, 05:59 AM
    We don't provide homework answers here. However. we will be happy to help you along if you show us your attempt so we can see where you are getting stuck. To get you started:

    1. Do you know the definition of dB?
    2. Do you know how to calculate the ratios of the power when increasing from 5 to 15 volts?
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Logarithms [ 1 Answers ]

How do you simplify logs with fractions or roots? With normal simple numbers, I understand but using fractions or roots, I get really confused. I think it's also because I'm rocky with indices as a whole to start with so that didn't help. Example; Given that logb(2) = 0.3010 and logb(3) =...

Logarithms [ 5 Answers ]

log_{\frac{3}{10}} (\frac{x}{3})= log_{\frac{3}{5}} (6-6x)

Logarithms [ 1 Answers ]

How to find logarithm?

Logarithms [ 3 Answers ]

how to solve for q in the equation y=log(-log(1-q))

Logarithms [ 1 Answers ]

got stuck on this one... use the properties of logarithms to rewrite the expression in terms of log(base 10)of 3 and log(base 10) of 4. Then use log(base10) of 3 = 0.477 and log (base 10) of 4 =0.602 to approximate the expression. then these are the two I have to solve. a. log (base 10) of 16...

View more questions Search