Item 1 The electric field of an electromagnetic wave in a vacuum is Ey (21.0V/m)cos((2.78 × 108 )x - wt), where x is in m and t is in s. Part A What is the wave's wavelength? Express your answer with the appropriate units. λ = Submit Part B f= μA Value What is the wave's frequency? Express your answer with the appropriate units. Submit B= Submit Value HÅ My Answers Give Up Units Part C What is the wave's magnetic field amplitude? Express your answer with the appropriate units. Value μA Units My Answers Give Up 6 Units My Answers Give Up ? ? ?

Item 1 The electric field of an electromagnetic wave in a vacuum is Ey (21.0V/m)cos((2.78 × 108 )x - wt), where x is in m and t is in s. Part A What is the wave's wavelength? Express your answer with the appropriate units. λ = Submit Part B f= μA Value What is the wave's frequency? Express your answer with the appropriate units. Submit B= Submit Value HÅ My Answers Give Up Units Part C What is the wave's magnetic field amplitude? Express your answer with the appropriate units. Value μA Units My Answers Give Up 6 Units My Answers Give Up ? ? ?