You cannot exert a force on a wall A) if the wall resists. B) ...

[rlane42]

You cannot exert a force on a wall
 
  A) if the wall resists.
  B) unless you put your mind to it.
  C) unless the wall simultaneously exerts the same amount of force on you.

Question 2

When you rub your hands together, you
 
  A) can push harder on one hand than the other.
  B) cannot push harder on one hand than the other.
  C) need more information

[Chou]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: B

[rlane42]

Thanks for the timely response, appreciate it

[abro1885]

Wow, this really help