The force that holds atoms together to form molecules is 1) ...

[pane00]

The force that holds atoms together to form molecules is
 
  1) electric,
  2) magnetic,
  3) gravitational,
  4) nuclear,
 
  and the force that holds the protons in a nucleus together is
  5) electric.
  6) magnetic.
  7) gravitational.
  8) nuclear.

Question 2

A supersonic aircraft flies between observers A and B as shown. The resulting sonic boom will soon be heard by
 
  1) only observer A.
  2) only observer B.
  3) both A and B.
  4) neither A nor B.
 
  The intensity of the sonic boom depends on the
  5) speed of the aircraft.
  6) size of the aircraft.
  7) distance from the aircraft.
  8) all of the above.
  9) none of the above.

[swimkari]

Answer to Question 1

Answer: 1, 8

Answer to Question 2

Answer: 3, 8

[pane00]

Thank you!

[swimkari]

Always glad to help...