VP 32.2.3 Part I A dental laser emits a sinusoidal electromagnetic wave that propagates in vacuum in the positive xx-direction with wavelength 6.94 μmμm. At xx = 0 and tt = 0 the electric field E⃗ E→ points in the +y+y-direction and its magnitude equals the amplitude EmaxEmax = 4.20 MV/mMV/m. Find the magnitude of the magnetic field B⃗ B→ at xx = 0 and tt = 0. Find the direction of the magnetic field B⃗ B→ at xx = 0 and tt = 0. Find the magnitude of the electric field E⃗ E→ at xx = 4.34 μmμm and tt = 0. Express your answer with the appropriate units. Find the direction of the magnetic field E⃗ E→ at xx = 4.34 μmμm and tt = 0. Find the magnitude of the magnetic field B⃗ B→ at xx = 4.34 μmμm and tt = 0. Express your answer with the appropriate units. Find the direction of the magnetic field B⃗ B→ at xx = 4.34 μmμm and tt = 0.