« previous next »

Author Question: A barking dog delivers about 1.0 mW of power, which is assumed to be uniformly distributed in all ... (Read 78 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?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity
Durable power of attorney. Durable power of attorney.
To maintain global power requires the continuous development of weapons. Shown here is the Osprey. ... To maintain global power requires the continuous development of weapons. Shown here is the Osprey. ...
Sixteen-pin OBD II DLC with terminals identified. Scan tools use the power pin (16) ground pin (4) ... Sixteen-pin OBD II DLC with terminals identified. Scan tools use the power pin (16) ground pin (4) ...
Nuclear power Nuclear power
A racing car accelerates uniformly from rest along a straight track. This track has markers ... A racing car accelerates uniformly from rest along a straight track. This track has markers ...
Video: Normal and abnormal blood pH

For a complete list of videos, visit our video library