« previous next »

Author Question: For each 4He produced in a proton-proton chain, _____. A) the first reaction must occur four ... (Read 168 times)

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
on: Jul 27, 2018
For each 4He produced in a proton-proton chain, _____.
 
  A) the first reaction must occur four times.
  B) the first and second reactions must occur twice.
  C) the second and third reactions must occur four times.
  D) the third reaction must occur twice.

Question 2

Which of the following statements is true regarding shock waves?
 
  A) They are predominantly transverse in nature.
  B) They can be produced by the birth of very hot stars.
  C) They are also called shear waves.
  D) They cannot be produced by supernova explosions.


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

strangeaffliction

  • Hero Member
  • *****
  • Posts: 660
Reply #2 on: Jul 27, 2018
Thanks


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio
Reaction at constant-volume Reaction at constant-volume
Reaction 4: Cleavage to Two Triose Phosphates Reaction 4: Cleavage to Two Triose Phosphates
Reaction 1: The Initial Dehydrogenation Reaction 1: The Initial Dehydrogenation
Modification steps (1–4) that occur in maturation of E. coli tRNATyr from its transcript Modification steps (1–4) that occur in maturation of E. coli tRNATyr from its transcript
Managing Supply Chain and Operations: An Integrative Approach, 2nd Edition Managing Supply Chain and Operations: An Integrative Approach, 2nd Edition
Video: Vasectomy

For a complete list of videos, visit our video library