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

Author Question: The intensity of the waves from a point source at a distance d from the source is I. What is the ... (Read 63 times)

MGLQZ

  • Hero Member
  • *****
  • Posts: 579
on: Jul 29, 2018
The intensity of the waves from a point source at a distance d from the source is I. What is the intensity at a distance 2d from the source?
 
  A) 4I
  B) 2I
  C) I/2
  D) I/4
  E) I/

Question 2

If 3.0  1015 electrons flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current through the wire? (e = 1.60  10-19 C)
 
  A) 0.12 mA
  B) 0.24 mA
  C) 7.5  107 A
  D) 7.5  1014 A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

wergv

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

D

Answer to Question 2

A


MGLQZ

  • Member
  • Posts: 579
Reply 2 on: Jul 29, 2018
Wow, this really help

sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea. Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea.
Male tule elk in Point Reyes Male tule elk in Point Reyes
The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri The Cardiac Landmarks. A = Aortic Area; P = Pulmonic Area; E = Erb’s Point; T = Tri
Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme
Major trunk lines carrying long-distance traffic crisscrossed the area east of the Mississippi. The Major trunk lines carrying long-distance traffic crisscrossed the area east of the Mississippi. The
Potatoes are a good source of complex carbohydrates Potatoes are a good source of complex carbohydrates
Video: Eczema

For a complete list of videos, visit our video library