The electric field associated with an electromagnetic wave propagating in a dielectric medium is given by E=30(2x^+y^)sin[2π(5×10¹⁴t−(10⁷/3)z)] V m⁻¹. Which of the following option(s) is(are) correct? [Given: The speed of light in vacuum, c=3×10⁸ m s⁻¹]