One nuclear reaction that occurs occasionally in the sun is the ...

[sammy]

One nuclear reaction that occurs occasionally in the sun is the fusion of three alpha particles. What isotope is produced by this reaction? NOTE: Atomic number 6 is carbon, number 7 is nitrogen, and number 8 is oxygen.
 
  A) 12O B) 14N C) 12N D) 12C E) 14C

Question 2

A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400.00 Hz. The sound he hears reflected back from the wall is at a frequency 408.00 Hz.
 
  At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s. A) 3.68 m/s
  B) 333 m/s
  C) 6.67 m/s
  D) 6.80 m/s
  E) 3.37 m/s

[verrinzo]

Answer to Question 1

D

Answer to Question 2

E

[sammy]

Gracias!

[momolu]

Excellent