If a lens is submerged in water, what happens to its focal ...

[dakota nelson]

If a lens is submerged in water, what happens to its focal length?
 
  A) It decreases.
  B) It stays the same.
  C) It becomes negative.
  D) It increases.

Question 2

A boy kicks a football from ground level with a certain initial velocity at an angle 30.0 above the horizontal. In 2.00 seconds the ball completes its trajectory and hits the ground. What is the initial velocity of the ball?
 
  A) 9.80 m/s
  B) 4.90 m/s
  C) 39.2 m/s
  D) 19.6 m/s
  E) 78.4 m/s

[Shshxj]

Answer to Question 1

D

Answer to Question 2

D

[dakota nelson]

Wow, this really help

[carlsona147]

Thanks for the timely response, appreciate it