If the magnetic field in an EM wave is in the x-direction and the ...

[Lobcity]

If the magnetic field in an EM wave is in the x-direction and the electric field in the wave is in the y-direction, the wave is traveling in the
 
  A)
 
  x-y plane.
  B)
 
  direction halfway between the x- and y-directions.
  C)
 
  z-direction.
  D)
 
  x-direction.
  E)
 
  negative z-direction.

Question 2

What is impossible about the following situation? An object in simple harmonic motion has an equilibrium position x = 0.00 m.
 
  At some instant in time, the position of the object is +3.00 m, the velocity is -2.00 m/s, and the acceleration is +9.00 m/s2.
  A)
 
  The numerical value of the velocity is smaller than the distance from the equilibrium position, but the numerical value of the magnitude of the acceleration is larger than the distance from equilibrium.
  B)
 
  The velocity is opposite in direction to the displacement.
  C)
 
  The acceleration is greater than the speed.
  D)
 
  The speed is less than the displacement.
  E)
 
  The displacement from equilibrium and the acceleration are in the same direction.

[yeungji]

Answer to Question 1

E

Answer to Question 2

E