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

Author Question: The earliest atmosphere of Earth was ____. A)essentially the same as our modern atmosphere ... (Read 231 times)

c0205847

  • Hero Member
  • *****
  • Posts: 531
on: Jul 13, 2018
The earliest atmosphere of Earth was ____.
 A)essentially the same as our modern atmosphere
 B)composed entirely of nitrogen
 C)composed of ozone and hydrogen
 D)blown into space by solar wind
 E)composed entirely of ozone

Question 2

Is it possible to change the velocity of a stream but have it maintain the same discharge? Explain.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bpool94

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 13, 2018
Answer to Question 1

D

Answer to Question 2

Yes. The discharge (Q) is a product of the velocity (V) and the cross-sectional area (A ); that is, Q = VA. To maintain the same discharge while changing the velocity, it is necessary to change the cross-sectional area at the same time, and in the opposite manner. For example, if the velocity is increased, the cross-sectional area would need to be decreased by an appropriate amount.


c0205847

  • Member
  • Posts: 531
Reply 2 on: Jul 13, 2018
Great answer, keep it coming :)

tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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 monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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.

Earliest fossils and living cyanobacteria Earliest fossils and living cyanobacteria
DNA analysis of phylogenetic relationships among modern and extinct flightless birds by Cooper and c DNA analysis of phylogenetic relationships among modern and extinct flightless birds by Cooper and c
The Distribution of the Earth's Wealth The Distribution of the Earth's Wealth
pBR322 one of the earliest cloning vectors pBR322 one of the earliest cloning vectors
Percent of oxygen in the atmosphere versus altitude. Percent of oxygen in the atmosphere versus altitude.
Earth 240 Million Years Ago Earth 240 Million Years Ago
Video: Dissociative Disorders (Part 3)

For a complete list of videos, visit our video library