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 64 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
:D TYSM

lcapri7

  • Member
  • Posts: 350
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there
Source Regions Source Regions
Write the equation in general form of the line passing through the point Write the equation in general form of the line passing through the point
Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ... Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ...
Waves Approaching the Shore Waves Approaching the Shore
Set-Point Theory Set-Point Theory
Video: Inflammation Animation

For a complete list of videos, visit our video library