The focal length of a convex mirror is -20 cm. What is its radius ...

[karateprodigy]

The focal length of a convex mirror is -20 cm. What is its radius of curvature?
 
  A) -10 cm
  B) 40 cm
  C) -40 cm
  D) -20 cm
  E) 20 cm

Question 2

A golf club hits a golf ball with a force of 2400 N. The golf ball hits the club with a force
 
  A) slightly less than 2400 N.
  B) exactly 2400 N.
  C) slightly more than 2400 N.
  D) close to 0 N.
  E) Cannot be determined without additional information.

[wergv]

Answer to Question 1

C

Answer to Question 2

B

[karateprodigy]

Gracias!

[amandalm]

Thanks for the timely response, appreciate it