The electric field between oppositely-charged parallel plates is ...

[moongchi]

The electric field between oppositely-charged parallel plates is
 
  A) uniform.
  B) stronger at the ends.
  C) composed of field lines curved in opposite directions.
  D) none of the above

Question 2

Four traveling waves are described by the following equations, where all quantities are measured in SI units and y represents the displacement.
 
  I: y = 0.12 cos(3x + 2t)
   II: y = 0.15 sin(6x - 3t)
   III: y = 0.23 cos(3x + 6t)
   IV: y = -0.29 sin(1.5x - t)
  Which of these waves have the same speed?
  A) I and III
  B) I and IV
  C) II and III
  D) I and II
  E) III and IV

[Bsand8]

Answer to Question 1

Answer: A

Answer to Question 2

B

[moongchi]

Wow, this really help

[amynguyen1221]

Thanks for the timely response, appreciate it