This topic contains a solution. Click here to go to the answer

Author Question: The earliest atmosphere of Earth was ____. A)essentially the same as our modern atmosphere ... (Read 232 times)

c0205847

  • Hero Member
  • *****
  • Posts: 531
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
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
Excellent


epscape

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

For a complete list of videos, visit our video library