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

Author Question: Above about 80 km, the Sun's radiation ionizes the gases. What is this part of Earth's atmosphere ... (Read 45 times)

AEWBW

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
Above about 80 km, the Sun's radiation ionizes the gases. What is this part of Earth's atmosphere called?
 
  A) The troposphere
  B) The stratosphere
  C) The mesosphere
  D) The ionosphere
  E) The magnetosphere

Question 2

Compare how doubling the diameter of a mirror will affect both resolution and light grasp.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

wtf444

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

The resolution would now be twice as sharp, but the increase in surface area, with the squaring for the area, would now detect stars four times fainter than before.


AEWBW

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
Gracias!

kswal303

  • Member
  • Posts: 316
Reply 3 on: Yesterday
Excellent

« previous next »
 

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?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

The oil pump is the only part in an engine that gets unfiltered engine oil. The oil is drawn up ... The oil pump is the only part in an engine that gets unfiltered engine oil. The oil is drawn up ...
Radiation Quantity and Quality Radiation Quantity and Quality
Recent history of biochemistry shown by the introduction of new techniques. (part 1) Recent history of biochemistry shown by the introduction of new techniques. (part 1)
Recent history of biochemistry shown by the introduction of new techniques. (part 2) Recent history of biochemistry shown by the introduction of new techniques. (part 2)
Earth Science is Environmental Science Earth Science is Environmental Science
Bivalve (scallop) with hinged, two-part shell Bivalve (scallop) with hinged, two-part shell
Video: Hormones and the menstrual cycle Animation

For a complete list of videos, visit our video library