BONUS PROBLEM: THIS PROBLEM IS WORTH 10 POINTS! The electric…

BONUS PROBLEM: THIS PROBLEM IS WORTH 10 POINTS! The electric field of a sinusoidal electromagnetic wave obeys the equation E(x,t)=(375 V/m)cos⁡[(1.99×107 rad/m)x+(5.97×1015 rad/s)t].{“version”:”1.1″,”math”:”E(x,t) = (375 \text{ V/m}) \cos\Big[(1.99 \times 10^7 \text{ rad/m})x +(5.97 \times 10^{15} \text{ rad/s})t \Big].”} Which of the following options best describes the characteristics of this wave? [The wavelength of visible light ranges from about 380 nm to 750 nm.]  

Electric charge is uniformly distributed inside a nonconduct…

Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. The electric field at a point P, which is 0.50 m from the center of the sphere, is 15,000 N/C and is directed radially outward. At what distance from the center of the sphere does the electric field have the same magnitude as it has at P?