« previous next »

Author Question: A barking dog delivers about 1.0 mW of power, which is assumed to be uniformly distributed in all ... (Read 22 times)

biggirl4568

  • Hero Member
  • *****
  • Posts: 551
on: Jul 29, 2018
A barking dog delivers about 1.0 mW of power, which is assumed to be uniformly distributed in all directions. What is the intensity level in decibels at a distance 5.00 m from the dog? The threshold of human hearing is 1.0  10-12 W/m2.
 
  A) 61 dB
  B) 63 dB
  C) 65 dB
  D) 68 dB

Question 2

The intensity at a distance of 6.0 m from a source that is radiating equally in all directions is 6.0  10-10 W/m2. What is the intensity level in dB? The threshold of human hearing is 1.0  10-12 W/m2.
 
  A) 18 dB
  B) 23 dB
  C) 28 dB
  D) 32 dB
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Liamb2179

  • Sr. Member
  • ****
  • Posts: 365
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

biggirl4568

  • Hero Member
  • *****
  • Posts: 551
Reply #2 on: Jul 29, 2018
TY


Liamb2179

  • Sr. Member
  • ****
  • Posts: 365
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

A comparison of the sizes of various chemical and biological structures, and the resolving power of A comparison of the sizes of various chemical and biological structures, and the resolving power of
Light-Gathering Power Light-Gathering Power
The Chernobyl, Ukraine, Nuclear Power Plant Disaster The Chernobyl, Ukraine, Nuclear Power Plant Disaster
Finding the derivative using the power rule - Solutions Finding the derivative using the power rule - Solutions
Find the voltage, current and power for each resistor in the circuit below Find the voltage, current and power for each resistor in the circuit below
Physics: Power, Energy and Time Physics: Power, Energy and Time
Video: Summary of glucose catabolism

For a complete list of videos, visit our video library