An electromagnetic wave has an electric field given by
e? (y, t)=[3.90×105v/mcos(ky−(1.200×1013ra d/s)t)]k^
in which direction is the wave traveling? what is the wavelength of the wave?

λ = 157 μm

Explanation:

given,

now,

ω = 1.2 x 10¹³ rad/s

f = 1.91 x 10¹² Hz

determine the wavelength of the E M wave

   λ = 1.57 x 10⁻⁴ m

   λ = 157 x 10⁻⁶ m

   λ = 157 μm

hence, the wavelength of the wave is equal to λ = 157 μm

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

explanation:

the masses of the objects and the distance between them