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

Author Question: Sketch the schematic diagram of energy transfers for a refrigerator or air conditioner What will ... (Read 64 times)

WhattoUnderstand

  • Hero Member
  • *****
  • Posts: 517
Sketch the schematic diagram of energy transfers for a refrigerator or air conditioner
 
  What will be an ideal response?

Question 2

The lifetime of uranium 238 is 6.0  109 y, and that of uranium 235 is 1.0  109 y. The present abundance of uranium 238 is 140 times the abundance of uranium 235. What was the ratio of abundances 1 billion years ago?
 
  A)
 
  140:1
  B)
 
  6:1
  C)
 
  61:1
  D)
 
  161:1
  E)
 
  322:1



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

enass

  • Sr. Member
  • ****
  • Posts: 380
Answer to Question 1

See Fig. 20-9 in the text.

Answer to Question 2

C




WhattoUnderstand

  • Member
  • Posts: 517
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)


emsimon14

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

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

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.

For a complete list of videos, visit our video library