Asinusoidal electromagnetic wave having a magnetic field of amp

a sinusoidal electromagnetic wave having a magnetic field of amplitude 1.25µt and a wavelength of 432 nm is traveling in the + x-direction through empty space.
(a) what is the frequency of this wave?
(b) what is the amplitude of the associated electric field?
(c) write the equations for the electric and magnetic fields as functions of x and t in the form of eqs. (32.17).

Plss anybody know how to do this? ? i need the answers from a through d

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?