The main fuel for producing energy in the center of the sun is ...

[stock]

The main fuel for producing energy in the center of the sun is
 
  A) helium.
  B) hydrogen.
  C) uranium.
  D) any radioactive material.
  E) oxygen.

Question 2

An object is attached to a vertical ideal massless spring and bobs up and down between the two extreme points A and B. When the kinetic energy of the object is a minimum, the object is located
 
  A) 1/4 of the distance from A to B.
  B) midway between A and B.
  C) 1/ times the distance from A to B.
  D) 1/3 of the distance from A to B.
  E) at either A or B.

[nguyenhoanhat]

Answer to Question 1

B

Answer to Question 2

E

[stock]

Thanks for the timely response, appreciate it

[rachel]

Excellent