This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why does the intensity of waves from a small source decrease with the square of the distance from ... (Read 59 times)

humphriesbr@me.com

  • Hero Member
  • *****
  • Posts: 550
on: Jul 29, 2018
Why does the intensity of waves from a small source decrease with the square of the distance from the source?
 
  A) The waves run out of energy as they travel.
  B) The waves spread out as they travel.
  C) The medium through which the waves travel absorbs the energy of the waves.
  D) The waves slow down as they travel away from the source.
  E) The frequency of the waves decreases as they get farther from the source.

Question 2

Four waves are described by the following equations, where distances are measured in meters and times in seconds.
 
  I. y = 0.12 cos(3x - 21t)
  II. y = 0.15 sin(6x + 42t)
  III. y = 0.13 cos(6x + 21t)
  IV. y = -0.23 sin(3x - 42t)
  Which of these waves have the same speed?
  A) I and II
  B) I and III
  C) II and III
  D) III and IV
  E) II and IV
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dajones82

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly


humphriesbr@me.com

  • Member
  • Posts: 550
Reply 2 on: Jul 29, 2018
Excellent

nathang24

  • Member
  • Posts: 314
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

A small sample of the great diversity of seed sizes and shapes. A small sample of the great diversity of seed sizes and shapes.
The path of sound waves through the outer, middle, and inner ear. The path of sound waves through the outer, middle, and inner ear.
Martin Van Buren, sitting uncomfortably for this engraving, would eventually ascend to the presidenc Martin Van Buren, sitting uncomfortably for this engraving, would eventually ascend to the presidenc
Ways to prevent heat waves Ways to prevent heat waves
Small Town USA: Struggling to Survive Small Town USA: Struggling to Survive
Saffir-Simpson Scale (Hurricane Intensity Scale) Saffir-Simpson Scale (Hurricane Intensity Scale)
Video: Muscular Dystrophy

For a complete list of videos, visit our video library