Could someone PLEASE help me with these physics questions? Any idea will help

(7) A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a given instant, the electric field of the wave is E = 0.082 V/m j. What is the magnetic vector ( direction and magnitude) of the wave at the point P at that instant? (c = 3.0 x 108 m/s)(8) _) Two capacitors, 0'1 and 0'2, are connected in series across a source of potential difference. With the potential source still connected, a dielectric is inserted between the plates of capacitor Cl. In three or four sentences explain What happens to the charge on capacitor 02 and Why? (9) Consider the circuit shown in the figure. Note that two currents are shown. Calculate the EMFs 61 and 62. Show your work. 4.0 9 12 =4.0 4.0 A+ + 62= 5.0 0 20 V 1+ 6.0 0 E3 4.0 0 + FIGURE 4